LOs: To make predictions about whether an object will sink or float. To define density and relate it to the particle model. To use the equation to calculate the densities of different objects. Aimed at a lower set year 8 class. A higher ability class will probably require more. Density of solids and liquids PowerPoint. Includes heavily scaffolded worksheet on density calculations and a cloze exercise. Mini-plenary using mini-whiteboards or similar. Demonstration of density using water and a range of different objects. For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

History of Magnets comprehension and quiz (for year 7 or 8)

A level or IB DP Chemistry worksheet on electrochemical cells. A table compares voltaic / galvanic and electrolytic cells, before students are asked to answer a number of questions on the differences. .pdf and .docx files included (same worksheet). For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce

Worksheet on the properties and formation of sedimentary rocks, and in comparison to igneous rocks.

Collision theory / kinetic theory crossword Do Now Students are required to 'fill in the gaps' to complete the crossword. The purpose is to check their understanding about the collision theory and how scientists can increase rates of reaction. This resource tests students on 7 words which are present at the bottom of the worksheet in a 'word bank'. To differentiate this resource for more able students, you could remove the word bank. The 7 solutions are: activation, collide, energy, kinetic, orientation, speed, temperature

A year 12 (AS level) guide to solving Hess cycle questions on enthalpy change of reaction, using either enthalpy change of combustion or enthalpy change of formation values. Includes detailed instructions and one worked problem. Could also be used for year 13 (A level).

Year 7 or 8 Do Now on elements, compounds and the periodic table. Students have to identify metals and non-metals using the periodic table, then have to determine the number of atoms in compounds, eg. 2 x hydrogen and 1 x oxygen in water.

A year 12 (AS level) resource for solving bond enthalpy questions. Could also be used for GCSE or year 13 (A level). This contains a numbered guide of how to solve these types of questions and includes 2 worked examples, following the guide.

A colourful worksheet for year 7 or 8 pupils on drawing particle diagrams. Includes tips on how to draw particle diagrams, avoiding some common misconceptions (eg. particles not touching in a liquid) and a 7 question worksheet to check understanding. The worksheet is uploaded both as PowerPoint (editable) and PDF files (same worksheet). For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

For a lower set year 8 class. A highly scaffolded worksheet teaching students how to use the density formula to calculate densities of various solids. A cloze exercise testing understanding of key concepts about density.

Year 7 or 8 worksheet on metals and non-metals. A quick check for understanding on the properties of metals and non-metals

Key questions for year 12/year 13 on Mass Spectrometry. Answer key included. The topic of the questions is molecular mass spectrometry and assumes some prior knowledge on atomic mass spectrometry and isotopes. There are 10 questions, which are designed to test knowledge and understanding. They could be used as a homework task pre-lesson as part of 'flip' learning, or as an independent or group task, using text books/online research to answer them. For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

2 x nuclear radiation and radioactivity Do Now keyword match up/comprehension activities. The first tests the keywords 'stable', 'unstable', 'radioactive' and 'decay' and has a comprehension on alpha, beta and gamma radiation. The second tests the keywords 'mutation', 'ionising radiation', 'fuel rods' etc. and has a brief comprehension on nuclear accidents.

2 x Energy keyword match-up Do Nows. Each activity involves students matching keywords to their definitions and then answering questions or correcting a paragraph. 1. The first tests students on types of energy, with keywords such as 'kinetic energy', 'thermal energy' and 'light energy' and then asks questions on useful and wasted energy transfers. 2. The second tests students on energy transfer process, with keywords such as 'conduction', 'convection', 'radiation' and 'vacuum' and asks students to correct spelling and grammar mistakes in a paragraph.

KS3 Assessment on Particles. This test is designed to be a formative assessment, with students able to demonstrate their knowledge and understanding of the particle theory of matter both in short answer and extended open answer questions. The test does not include a mark scheme, but the teacher should be able to form a judgment on the current level of students from their responses. This test covers the following topics: Solids, liquids, gases Particle diagrams Changes of state Properties of solids, liquids and gases Brownian motion Melting and boiling points Heating and cooling curves For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

Year 7 or 8 lesson on diffusion LOs: Describe the process of diffusion and its relation to the cell. Explain how different factors affect the speed of diffusion. Analyse results into an experiment of the factors which affect diffusion. Activities: 1. Do Now: Starter question on liquids and gases 2. Student Activity: Demonstration of diffusion using potassium permanganate, iodine or perfume 3. Exposition: Introduce the particle model of diffusion 4. Mini-plenary: Whiteboard quiz 5. Exposition: Diffusion in cells and the factors affecting the rate of diffusion 6. Independent Task: Diffusion worksheet 7: Plenary: Check for understanding question For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

GCSE lesson or revision lesson on Fuels from Oils, including recap of alkanes and alkenes LOs: To compare alkanes and alkenes. To explain how fractional distillation works. To analyse the differences between cracking and polymerisation 1. Do Now: Compare and contrast alkanes and alkenes 2. Student Activity: Labelling and explaining distillation apparatus 3. Student Activity: Describing trends in properties of different fractions from the fractional distillation process 4. Mini-plenary: MCQ on hydrocarbons 5. Student Activity: Explaining cracking of alkanes and polymerisation of alkenes 6. Independent Task: Exam style6 mark question on fractional distillation 7. Peer Assessment: Marking peers' work and giving feedback 8. Plenary: Re-do of exam style question, taking of peer feedback For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

Year 8 lesson on changes of state. PowerPoint and worksheets included (at back of PowerPoint) LOs: To recognise changes of state as being reversible changes. To use scientific terminology to describe changes of state. To explain changes of state using the particle model and ideas about energy transfer. 1. Do Now: Which particle diagram shows a solid, a liquid and a gas? 2. Group Activity: Think, pair, share - what do the photos show? 3. Exposition: Changes of state and the particle model 4. Student Activity: Complete the diagram to show the changes of state and answer the questions 5. Mini-Plenary: Mini-whiteboard quiz on changes of state 6. Exposition: Different substances have different melting and boiling points 7. Exposition: Heating curves 8. Student Activity: Asking students to deduce what states different substances are at different temperatures, using their melting and boiling points 9. Plenary: Multiple choice questions exit ticket For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

A year 7 or 8 lesson on metal alloys. PowerPoint and worksheets included (at the back of the PowerPoint). LOs: To state what is meant by an alloy. To describe the uses of some alloys. To explain why an alloy can be stronger than a pure metal. 1. Do Now: Can you remember the names of these 4 metals? Which would you use to build a bridge? Why? 2. Exposition: Video (BBC) or exposition on alloys. Ask students to define what an alloy is (could be done via Think, Pair, Share). 3. Student Activity: Worksheet answering questions on alloys video (higher and scaffolded version included) 4. Student Activity: 'Information hunt' on what various alloys contain and what their applications are 5. Exposition: Why are alloys strong? Linking strength to microscopic structure 6. Plenary: Exam style question on why alloys are strong (keywords may be provided to help) For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)

Year 8 lesson on evaporation and a comparison with boiling. PowerPoint and worksheets included (at back of PowerPoint). LOs: To describe the process of evaporation. To explain the differences between boiling and evaporation using the particle model. To investigate factors affecting evaporation. 1. Do Now: Underline Mr. Wrong’s mistakes 2. Group Activity: Think, pair, share - what is happening in the pictures? 3. Exposition: Explaining evaporation using the particle model 4. Exposition/Group Activity: Comparing evaporation to boiling 5. Student Activity: Students complete table comparing evaporation to boiling (highly scaffolded and less scaffolded versions available) 6. Mini-plenary: True or false quiz 7. Demonstration: Factors affecting evaporation (eg. wind speed, temperature, surface area, liquid being evaporated). Worksheet for students to complete. 8. Plenary/Reflection: What quality did I demonstrate today? For more resources check out my shop: https://www.tes.com/teaching-resources/shop/alexpce If you liked this resource, please write a review! :)