After a PhD in Medicinal Chemistry and some time in industry; I finally found my calling as a secondary school teacher in Chemistry.
Enjoy!
Please review the resources you buy in order for me to improve my teaching and my lessons
After a PhD in Medicinal Chemistry and some time in industry; I finally found my calling as a secondary school teacher in Chemistry.
Enjoy!
Please review the resources you buy in order for me to improve my teaching and my lessons
AQA AS level Unit 1 Section 1 Atomic structure
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
LESSON 2: Isotopes
To explain the existence of isotopes
To determine the relative atomic mass of elements using isotope abundance data
To understand the physical and chemical properties of different isotopes
ENJOY!!!
Please rate and comment in order to further improve
AQA AS level Unit 1 Section 3 Bonding
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
LESSON 2: Metallic bonding
Objectives:
To describe the nature of metallic bonding
To explain the properties of metals
To consolidate with questions
ENJOY!!!
Please rate and comment in order to further improve
Edexcel CC25 Qualitative analysis: Test for ions for the new 9-1 GCSE
TOPIC 9 SEPARATE SCIENCE PAPER 2 - NEW for SEPTEMBER 2017
Included:
1 Lesson
Evaluation sheet for the core practical (student sheet)
Assessment points - purple sheet assessment
CLONE THE TEACHER - help during a practical lesson that requires less input from the teacher (to allow them to push themselves)
10 plenary questions
Part 1 of the CORE PRACTICAL - flame tests and microscale metal cation identification
Learning objectives:
To describe flame tests to identify ions in solids
To explain how metal ions are identified using sodium hydroxide solution
To be able to write ionic half equations for the formation of metal hydroxides
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
No exam questions due to copy write
Main topics include:
- Identification of metal cations (with sodium hydroxide solution)
- Flame tests
- Describe the chemical test for ammonia
- Describe the chemical test for Carbon dioxide
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
AQA AS level Unit 3 Section 1 Introduction to Organic Chemistry Lesson 4 + 5 Isomerism
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
Introduction of Organic Chemistry
4. Isomerism - Structural isomerism a) chain b) position c) functional
5. Isomerism - Stereoisomerism a) E/Z isomers
Lesson 4 + 5:
To state what is meant by structural isomers
To be able to draw the structures of chain, position and functional group isomers
To explain and draw E-Z isomers
ENJOY!!!
Please rate and comment in order to further improve
Edexcel 9-1 TOPIC 9 Sc24a Qualitative analysis-Polymers SEPARATE or TRIPLE PAPER 2
Edexcel CC24 Qualitative analysis: Polymers for the new 9-1 GCSE
TOPIC 9 SEPARATE SCIENCE PAPER 2 - NEW for SEPTEMBER 2017
Learning objectives: LESSON 1
Objectives:
To recall the terms polymer, monomer and polymerisation
To explain additional polymerisation reactions
To identify naturally occuring polymers
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
No exam questions due to copy write
Main topics include:
-Polymers
-Polymer paper chains (at the start of the lesson)
- Ethene and polyethene
- PVC, PTFE and poly(propene)
-Monomers to polymers
-polymers to monomers
- DNA, STARCH and PROTEIN - naturally occurring polymers
-polymer, monomer and polymerisation
- additional polymers for PVC, PTFE
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Edexcel 9-1 TOPIC 5 Sc15 Dynamic Equilibria: Haber process + Fertilisers
OPPORTUNITY TO COMPLETE ANOTHER TITRATION BUT NOT ENOUGH TIME IN OUR SCHOOL
SEPARATE or TRIPLE PAPER 1
TOPIC 5 SEPARATE SCIENCE PAPER 1 - NEW for SEPTEMBER 2017
Learning objectives:
STARTER
Mini test covering all the basics from combined (reversible reactions, Haber conditions, dynamic equilibrium, definitions)
Objectives:
To recall 3 essential elements for plant growth
To be understand how to name several fertilisers made from different acid and alkali compounds
To describe and compare the laboratory preparation and the industrial production of ammonium sulfate
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
No exam questions due to copy write
Main topics include: (H)
- Titration practical + set up if required
- Comparing industrial and lab processes of making fertilsers
what are fertilisers
- writing salt equations with ammonia
- 10 question check up (my students have been struggling with polyatomic ions and formulas)
- mini quiz at the end
- exam question but not included
-support sheet to help with calculations
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Edexcel 9-1 TOPIC 5 Sc15 Dynamic Equilibria + the Haber process
Edexcel 9-1 Sc16a TOPIC 5 Chemical cells and Hydrogen-oxygen fuel cells
TOPIC 5 Sc16a TOPIC 5 Chemical cells and Hydrogen-oxygen fuel cells SEPARATE TRIPLE PAPER 1
SEPARATE or TRIPLE PAPER 1
TOPIC 5 SEPARATE SCIENCE PAPER 1 - NEW for SEPTEMBER 2017
Learning objectives:
Objectives:
To know that a chemical cell produces a voltage until one of the reactants is used up
To be able to recall how a hydrogen-oxygen fuel cell functions
To evaluate the strengths and weaknesses of fuel cells for given uses
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
No exam questions due to copy write - in this case exam questions have been typed out
Main topics include: (H)
- Fuel cells
-Chemical cells - renewable and non-renewable batteries
- Hydrogen -oxygen fuel cells
- Strengths and weaknesses of hydrogen-oxygen fuel cells for their uses
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
AQA AS level Unit 3 Section 2 Alkanes and Haloalkanes
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
Alkanes section
Introduction to alkanes (naming recap, crude oil and properties)
Fractional distillation (crude oil, fractional distillation, separation, uses, properties)
LESSON 1:
Objectives:
To state the definition of an alkane
To explain how alkanes are named
To describe the properties of alkanes
LESSON 2:
Objectives:
To state the origin of crude oil and the compounds contained within it
To understand how fractional distillation works
To be able to identify the differences between each fraction
LESSON 3:
Objectives:
To know what cracking is
To compare the conditions and products of THERMAL and CATALYTIC cracking
To know the economic reasons for cracking
LESSON 4:
Objectives:
To recall what happens in complete combustion
To recall what happens in incomplete combustion
To know the problems associated with the internal combustion engine
LESSON 5:
To understand how pollutant emissions can be reduced
To recall what happens in the greenhouse effect
To consolidate learning with questions
Haloalkane
Formation of haloalkanes from alkanes - chain reactions
Haloalkanes introduction
Nucleophillic substitution
Elimination
Ozone and CFC
LESSON 6: FROM ALKANE SECTION
Objectives:
To define what a radical is
To describe the reaction mechanism for free radical substitution of methane
To understand that there can be other products of a chain reaction
LESSON 1: FROM HALOALKANE SECTION
Objectives:
To recap how to name the haloalkanes
To understand the properties
To understand the reactivity of the C-X bond by using bond polarity and bond enthalpy
LESSON 2:
To understand what nucleophiles are
To understand what nucleophilic substitution is
To be able to give examples of nucleophilic substitution reactions
LESSON3:
To understand what an elimination reaction is
To understand when conditions favour elimination rather than substitution
To understand when and how isomeric alkenes are formed
LESSON4:
To understand the role of ozone in the atmosphere
To understand how chlorine free radicals can be formed in the atmosphere and how they destroy ozone
To explain how research evidence led to the end of use of CFCs and alternatives found
AQA AS level Unit 3 Section 2 Alkanes Lesson 1 + 2 Alkane introduction + fractional distillation
See https://www.tes.com/teaching-resource/aqa-as-level-unit-3-section-2-alkanes-lesson-1-2-alkane-introduction-fractional-distillation-11707276
Lesson 3 + 4 Cracking of alkanes and combustion (3 lessons) here
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
Starter for 10 free from RSC
Alkane
Cracking
Combustion
LESSON 3:
Objectives:
To know what cracking is
To compare the conditions and products of THERMAL and CATALYTIC cracking
To know the economic reasons for cracking
LESSON 4:
Objectives:
To recall what happens in complete combustion
To recall what happens in incomplete combustion
To know the problems associated with the internal combustion engine
LESSON 5:
To understand how pollutant emissions can be reduced
To recall what happens in the greenhouse effect
To consolidate learning with questions
ENJOY!!!
Please rate and comment in order to further improve
AQA AS Level Unit 1 Section 4 Energetics -Hess’s Law, Bond enthalpy, Enthalpy Change, Endothermic, Exothermic
Using the specification and books
No exam questions are included due to copy right
Including:
Homework booklets
Assessment sheets
Interactive powerpoints (rarely seen in A-level)
RSC STARTER FOR 10 CAN BE FOUND ON RSC WEBSITE
Unit 1 Section 4: 3.1.4 Energetics#
3.1.4.1 Enthalpy change
Endothermic and Exothermic Reaction Basics
LESSON 1:
Objectives:
To know the reactions can be exothermic or endothermic
To know what an enthalpy change is
To define standard enthalpies or formation and combustion
Unit 1 Section 4: 3.1.4 Energetics
3.1.4.2 Calorimetry
Measuring Enthalpy Change
LESSON 2:
Objectives:
To define specific heat capacity
To describe how you measure enthalpy changes more accurately
To calculate the enthalpy of a reaction
LESSON 3:
Objectives: PRACTICAL CHOICES
To investigate the enthalpies change of a neutralisation reaction and allow for heat loss.
To investigate the enthalpies change of a displacement reaction and allow for heat loss.
To investigate the enthalpies change of a combustion reaction and allow for heat loss.
Unit 1 Section 4: 3.1.4 Energetics
3.1.4.3 Applications of Hess’s law
LESSON 4: Enthalpy of Formation
Objectives:
To understand the term Hess’s Law
To construct simple energy cycles
To carry out calculations using the enthalpy of formation
LESSON 5: Enthalpy of Combustion
To recall all definitions
To carry out calculation using enthalpy of combustion
To consolidate learning with exam style questions
Unit 1 Section 4: 3.1.4 Energetics
3.1.4.3 Applications of Hess’s law – REQUIRED PRACTICAL 2
LESSON 6: Required Practical
To understand what method to research
To determine an enthalpy change which cannot be measured directly.
To calculate the enthalpy change of the reaction
Unit 1 Section 4: 3.1.4 Energetics
3.1.4.4 Bond enthalpies
LESSON 7: Bond Enthalpy
To understand the term mean bond enthalpy
To use the mean bond enthalpies to calculate approximate values for ∆H for reactions
To consolidate with exam questions
Homework booklet with answers
Leave feedback and enjoy !!
Edexcel CC8 Acid and Alkalis for the new 9-1 GCSE
TOPIC 3 Chemical changes PAPER 1- NEW for SEPTEMBER 2017
Learning objectives:
To recall the rules which describe the solubility of substances in water
To be able to predict, using the solubility rules, if a precipitate will form in reactions
To be able to describe the method used to prepare a pure, dry sample of an insoluble salt
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
Main topics include:
- WHat are the rules for solubility of common substances in water ?
- How do you prepare a sample of a pure, dry insoluble salt?
- How do you predict whether a precipitate will be formed in a reaction ?
- Ionic equations (H)
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Enjoy !!!!
KS3 Scheme of work and lessons for Unit 8E Chemistry
Aimed for High/middle and low ability and all relevant differentiation is explained below each slide
8Ea Oxidation:
Lesson 1- Oxidation
To be able to state the meaning of the term Oxidation
To be able to explain the difference between oxidation and reduction
To complete word equations for oxidation reactions
Lesson 2 - Conservation of mass
To be able to explain in equations that there are always the same number of atoms that react compared to those formed
To understand what is meant by “the conservation of mass”
To model simple reactions using symbol equations
8Ec Fire safety:
Lesson 3 - Fire safety
To be able to use the fire triangle
To be able to define the word exothermic and combustion
To apply all knowledge by answering questions
Lesson 4 - Fuel
To understand the term variable
To investigate the temperature rise of water when some fuels are burnt
To compare the temperature rise of water when some fuels are burnt
8Ed Air pollution:
Lesson 5 - Combustion
To be able to name the products formed by complete/incomplete combustion of hydrocarbons
To describe the problems caused by incomplete combustion
To recall the oxidation reactions between metals and non-metals
Lesson 6 - Air pollution
To know the gases that cause acid rain
To be able to describe the effects of acid rain
To explain some problems of acid rain and how to reduce them
8Ee Global warming:
Lesson 7 - Global warming 1
To know the names of the greenhouse gases
To be able to describe how the greenhouse effect is caused
To be able to interpret graphs that show climate change
Lesson 8 - Global warming 2
To understand what human activities may influence the climate
To be able to explain the problems that climate change may cause
To explain how to limit the impact of predicted climate change
8 lessons including practicals
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
Homework attached
SEE THE INDIVIDUAL LESSONS FOR MAIN TOPICS
Enjoy !!!
PLEASE LEAVE FEEDBACK and REVIEWS
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Edexcel CC9 PART 1-3 Calculations involving masses for the new 9-1 GCSE
REVISION CARDS
The revision cards can be printed on double sided paper and then they can be cut into squares. The answers will be on the reverse of the card.
These are a really good revision resource and last a lifetime once laminated.
USED FOR REVISION OF Calculations involving masses
Main topics include:
- Balancing equations
- How do you calculate masses of reactants and products from balanced equations given the mass of 1 substance
- conservation of mass in non-enclosed and closed systems
- How does the law of conservation of mass explain why magnesium increases mass when it is burned and how copper carbonate reduces its mass when thermal decompostion occurs
-What is concentration?
-Concentration of solution
- converting between cm3 and dm3
- moles
-limiting reagents
-Using moles to balance equations
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
27 lessons in total
Including a CORE PRACTICAL - Titration (only SS)
Edexcel 9-1 TOPIC 5 Sc14 Quantitative analysis:
MOLAR VOLUME of gases and Avogadro’s law of gases
CONCENTRATION with mol and grams per dm3 and interchanging between
PERCENTAGE YIELDS + moles SEPARATE or TRIPLE
4 + 5. TITRATION CORE PRACTICAL and Titration calculations
ATOM ECONOMY
Edexcel 9-1 TOPIC 5 Sc15 Dynamic Equilibria + the Haber process
7. TOPIC 5 Sc16a TOPIC 5 Chemical cells and Hydrogen-oxygen fuel cells
8. Edexcel 9-1 TOPIC 5 Sc15 Dynamic Equilibria: Industrial processes including large scale of the Haber process - Edexcel 9-1 Sc15b PART 1
9. Edexcel 9-1 Sc15b PART 2
10.Edexcel 9-1 TOPIC 5 Sc15 Dynamic Equilibria: Haber process + Fertilisers
Edexcel 9-1 TOPIC 5 Transition metals, alloys and corrosion/rusting
11. Transition metals
12. Alloys
13. Rusting /Corrosion
Edexcel 9-1 TOPIC 9 Testing for ions
14. Tests for metal ions CORE P
15. Testing for non-metal ions CORE P
16. Accurate ion analysis
Edexcel 9-1 TOPIC 9 Hydrocarbons
17. Alkane and alkene
18. Reactions of alkanes and alkenes
Edexcel 9-1 TOPIC 9 Polymers
19. Addition polymerisation
20. Use of polymers
21. Condensation polymerisation
Edexcel 9-1 TOPIC 9 Alcohols and acids
22. Alcohols
23. Alcohols CORE P
24. Carboxylic acids
25. Ethanol production
Edexcel 9-1 TOPIC 9 Bulk properties and nanoparticles
26. Choosing materials
27. Nanoparticles
4.5.2 Chemical cells and fuel cells (chemistry only)
4.5.2.1 Cells and batteries
4.5.2.2 Fuel cells
Content split over 2 lessons -but more including practical lessons (lessons in our school are 40 minutes so can condense material for longer lessons if required)
All exam questions have been removed for copyright purposes
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
Lesson 1: Cells and batteries
To compare voltages in simple cells
To know that a chemical cell produces a voltage until one of the reactants is used up
To consolidate learning with questions
Lesson2:
To be able to recall how a hydrogen-oxygen fuel cell functions
To evaluate the strengths and weaknesses of fuel cells for given uses
To consolidate learning with questions
4.7 Organic chemistry
4.7.3 Synthetic and naturally occurring polymers (chemistry only)
4.7.3.1 Addition polymerisation
4.7.3.2 Condensation polymerisation (HT only)
4.7.3.3 Amino acids (HT only)
4.7.3.4 DNA (deoxyribonucleic acid) and other naturally occurring polymers
Content split over 7 lessons -but more including practical lessons (lessons in our school are 40 minutes so can condense material for longer lessons if required)
All exam questions have been removed for copyright purposes
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying
Lesson 1: Polymers
To know the terms polymer, monomer and polymerisation
To understand that simple polymers consist of large molecules containing chains of carbon atoms
To consolidate learning
Lesson 2: PRAC
To synthesise a polymer
To complete the BH booklets
To consolidate learning with questions
Lesson 3: LDPE and HDPE TRIPLE
To understand how LDPE and HDPE polymers are produced
To describe the uses for LDPE and HDPE
To compare the properties of thermosetting and thermosoftening polymers
Lesson 4: PRACTICAL
To change the conditions of reactions to produce different polymers
To understand the problems with polymers (EXTRA)
To consolidate learning
Lesson 5: POLYMER TRIPLE
To recall the terms polymer, monomer and polymerisation
To explain additional polymerisation reactions
To identify naturally occurring polymers
Lesson 6:Condensation polymers
To explain what is meant by condensation polymerisation
To explain which two functional groups react together to form a polyester
To be able to draw the structure of a polyester
Lesson 7: Amino acids
To be able to label the structure of an amino acid
To draw polypeptides
To make polysaccharides from sugars
Good revision quiz for the following:
CC1 States of Matter
CC2 Separating methods
CC3 Atoms
CC4 The Periodic Table
CC5 Ionic bonding
CC6 Covalent bonding
CC7 Types of substance
Separated in to 4 Question rounds -
Round 1- Atomic Structure + PT (p78-81)*
Round 2 and 3 - Bonding + types of substance (p82-88)*
Round 4 - Separating methods and mixtures (pg97-104)*
* Pages from Edexcel revision guide 9-1
These can be used as a complete class revision lesson or as 10 mark questions for the beginning of lessons.
Answers provided also - mainly 1 and 2 mark questions for speed
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Enjoy !!!!
PLEASE LEAVE FEEDBACK and REVIEWS
Edexcel 9-1 CC11 and CC12 Revision MAT / SHEET for Obtaining and using metals and reversible rxn
TOPIC 4 Extracting metals and Equilibria PAPER 1 - NEW for SEPTEMBER 2017
PLEASE NOTE - THESE MATS ARE MEANT TO BE PHOTOCOPIED AND LAMINATED FOR STUDENTS TO WORK ON PAPER (DUE TO LIMITED PHOTOCOPYING WITHIN THE DEPARTMENT CURRENTLY); THEY CAN BE ADAPTED SO STUDENTS CAN WRITE ON THEM BUT THAT IS ENTIRELY YOUR CHOICE
6 mats in total
REVISION MATs - PART 1, 2 (with MOST answers - others are self-explanatory) for CC11
REVISION MATs - PART 1, 2, 3, 4 (with MOST answers - others are self-explanatory) for CC12
USED FOR REVISION OF Obtaining and using metals and dynamic equilibrium and reversible reactions
Main topics include:
Reactivity series,
Metals,
Ores,
Pure substances
Mining,
Extraction,
Dynamic equilibrium
Haber process
Reversible reactions
Le Chatelier
Concentration
Pressure
Temperature
Oxidation
Reduction
OIL RIG
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Enjoy !!!
PLEASE LEAVE FEEDBACK and REVIEWS
Brainstorm - A Party (lesson) game
Great for revision and end of terms
Keep the party going after the big game with Brainstorm.You've played the "one note" party games; now play the one that keeps the party going with loads of categories for loads of fun! All the zany challenges get everyone into the action. Charge up game lessons with the one powepoint that rolls many of your favourite party games all into one game! Played in two teams of any size, it’s designed to keep players with all types of skills and interests having a blast.There is opportunity to add your own slides and keep extending the game (adapting to each class)
The game has several sections - depending on the students you have:
Act-it (charades) - One person acts out the clue for the rest of the team.
Guess-it (word clues) – Get your team to guess as many words as they can.
List-it (things in a category) – Teams try to guess the 9 answers in the category.
Draw-it (draw the clue) – Get your team to guess your drawing as quickly as they can.
Match-it (memory) - Find the pairs as quickly as you can, watch out for the moving tiles.
Perform-it (reverse charades) – The team acts out the clue for just one guesser.
Order-it (sorting challenge) - Put the listings in order … shortest to longest, oldest to newest.
Built-it and and fill-it (tangram torture!) - Uncover the shapes by answering questions to build a picture of the clue; and fill in the gaps on the slides
Know-it (trivia challenge) – Guess as many trivia questions as you can before the buzzer.
Contains over 580 slides of key words, match ups, questions, games, drawings, fill in and uncover for the following topics:
Edexcel 9-1 CC3 Atomic structure
Edexcel 9-1 CC4 Periodic table
Edexcel 9-1 CC5 Ionic bonding
Edexcel 9-1 CC6 Covalent bonding
Edexcel 9-1 CC7 Types of substance (Allotropes, metals and polymers)
Edexcel 9-1 CC9 Calculating masses
Edexcel 9-1 CC1 States of matter
Edexcel 9-1 CC2 Separating methods
Edexcel 9-1 CC8 Acid and alkali
Edexcel 9-1 CC10 Electrolysis
Edexcel 9-1 CC11 Metals
Edexcel 9-1 CC12 Dynamic equilibrium
All relating to specification (any pictures used have all been taken from the internet and I am not trying to claim rights to any pictures or information used)
Enjoy !!!!
Please leave a comment and rate
I made this powerpoint to help students see what Chemistry at A-level is like and why they should study it at A-level
Includes:
Job prospects
Famous celebrities with Science related degrees
Practical - Iodine clock (first group to 30 seconds) or Polymer bouncy balls
10 reasons why to study Chemistry
Future developments