This 45-slide PowerPoint and accompanying Lesson Notes teaches the strength of acids and bases. Learners often have misconceptions related to 'concentration' and 'strength' in reference to acids and bases. One of the aims of this lesson is to correct this misconception. The other main aims are listed below. A worksheet (with answers) to practice pH and pKa calculations is also included. By the end of this lessons, students will: 1) discuss and share their initial conceptions of acid strength. 2) be able to define strong acids and weak acids 3) be able to relate the strength of an acid to the value of its acid dissociation constant, Ka 4) learn to calculate an acid dissociation constant 5) be able to differentiate between concentrated acid and strong acid 6) identify common strong and weak acids and bases in everyday life 7) Calculate the pH of strong acid solutions 8) Calculate the pH of weak acid solutions I hope you find this lesson useful. FREE BONUS w/purchase: To receive one of my new paid resources as a free gift, please visit my website. The link can be found at my Store (click on my username).

This 33-slide PowerPoint presentation introduces students to the concept of freezing point depression and boiling point elevation. It also includes a worksheet in which students can take notes and practice the skills learned during the lesson. • First, students will review what happens when a liquid freezes and when it boils. • Then, a discussion about how adding a nonvolatile solute would affect the freezing and boiling process. • Molality will be introduced followed by practice problems. • The freezing point depression and boiling point elevation formulas will be introduced with examples for students to work out. • Finally, a practical investigation to work out the molar mass of an unknown solute by using freezing point depression will be outlined with an example calculation. (This lab activity is available in a separate resource). I hope you find this useful.

This 33-slide PowerPoint presentation introduces students to the concept of freezing point depression and boiling point elevation. It also includes a worksheet in which students can take notes and practice the skills learned during the lesson. • First, students will review what happens when a liquid freezes and when it boils. • Then, a discussion about how adding a nonvolatile solute would affect the freezing and boiling process. • Molality will be introduced followed by practice problems. • The freezing point depression and boiling point elevation formulas will be introduced with examples for students to work out. • Finally, a practical investigation to work out the molar mass of an unknown solute by using freezing point depression will be outlined with an example calculation. I hope you find this useful.

**UPDATED January 2017** Added a crossword puzzle with answers This is the 2nd part of a Magnetism unit with year 7 - Year 8 pupils. It includes an engaging illustrated PowerPoint presentation (30 slides) and scaffolded notes which have been customized to go along with the presentation. Three worksheets and a quiz are also included in this pack. Great value! The learning objectives for Part 2 are listed below. By the end of this lesson, pupils will: 1) discover that a magnet can be made by stroking a steel bar with the same pole of a permanent magnet from one end to the other end in one direction 2) be able magnetise a needle and use it as a simple compass. 3) discover that when electric current flows through an insulated wire wound around an iron core, the core becomes a magnet 4) be able to build a simple electromagnet 5) explore ways to manipulate a variety of variables to increase the strength of the electromagnet 6) know some uses of electromagnets 7) distinguish between a permanent magnet and an electromagnet 8) learn the components of an electric bell and how an electric bell works Your feedback is much appreciated. Cheers!

*UPDATED January 2017 - More support worksheets added* This resource includes a 56 slide PowerPoint presentation, four activity worksheets, a mind map, a short quiz and a 34-question unit test. Everything is ready to be used or easily edited to suit your learners. • Includes sound clips to bring the learning to life • Animations have been thoughtfully used to promote participation from lower achieving students and discussion from higher ability ones. • 26 learning outcomes listed below By the end of these lessons, pupils will: 1. recognise that sound is made by objects that vibrate 2. define that the frequency of vibration of the source is measured in Hertz (Hz) 3. discuss how sound is made in different musical instruments 4. know that a vibrating source causes the layers of air around it to move 5. discover that sound travels by compressing and expanding the surroundings 6. express that sound travels as a longitudinal wave 7. discover that sound travels best through solids and worst through gases because of the arrangement of the particles 8. explore the relative speed of sound in different mediums 9. explain that sound waves cannot travel through a vacuum because there are no molecules 10. know that sound waves detected by the ear cause the ear drum to vibrate 11. explore the structure of the ear 12. describe how sound is transmitted through the ear to the brain 13. know that different people have different ranges of hearing 14. know that the average human range of hearing is 20 to 20,000 Hz 15. define that loudness is measured in decibels (dB's) 16. discuss that 0 dB is the threshold of hearing and 130 dB's is the threshold of pain whilst 140 dB's causes damage 17. discuss that loud sounds can have permanent and temporary effect on the ear 18. discuss some common causes of ear damage 19. define that noise is unwanted sound 20. discover that a loud sound is produced by a large vibration and vice versa 21. discover that a high pitched sound is produced by a very frequent (quick) vibration and vice versa 22. know that an microphone can change sound to electricity and that this can then be displayed on an oscilloscope 23. know that the wave displayed on an oscilloscope is a transverse wave 24. demonstrate how to identify the amplitude, the wavelength and the frequency of a wave 25. recognise the link between the loudness of the sound and the amplitude of the wave 26. recognise the link between the pitch of the sound and the frequency/wavelength of the wave Cheers!

*This resource has been recommended by the TES Resource Team* This resource pack includes an engaging illustrated 33-slide PowerPoint presentation that will get your young learners thinking about magnetism. Scaffolded notes for pupils have been customized to go along with these lessons. Two additional worksheets and a quiz are also included. The learning objectives are listed below. By the end of this series of lessons, pupils will: be introduced to the discovery and history of magnets know the elements that have magnetic properties observe how magnets attract or repel each other and attract some materials and not others compare and group together a variety of everyday materials on the basis of whether they are attracted to a magnet, and identify some magnetic materials describe magnets as having 2 poles predict whether 2 magnets will attract or repel each other, depending on which poles are facing know that materials contain groups of spinning electrons called domains know that the domains are aligned in magnetic materials know that the domains of a non-magnetic material are not aligned learn about magnetic fields by plotting with compass, representation by field lines learn about Earth’s magnetism, compass and navigation explore the magnetic fields of permanent and induced magnets, and the Earth’s magnetic field You may also be interested in Magnetism Part 2 priced at only £2 You can save by getting Magnetism Part 1 and Part 2 together For the best value, get the Magnetism and Sound Bundle which also includes my popular Sound and Hearing lessons. Cheers!

**This resource has been recommended by the TES Resource Team** Get your learners thinking about electricity and electric circuits. My most popular resource includes: • A lucid and logical 69-slide PowerPoint which includes many visual aids. The slides are thoughtfully animated (not over-animated) to allow opportunities for learners to participate and promote class discussions. • Seven pages of interactive notes (scaffolded notes). These notes fit perfectly with the presentation. I find this activity keeps lower-level students engaged during the lessons while allowing differentiation for higher achievers. • A crossword (with answers), some homework questions and a quiz. **Just print and go! Or customize to fit the needs of your class.** Learning objectives covered in this resources are listed below. • By the end of these lessons, pupils should know: 1. that electricity is a form of energy. 2. that current electricity can be produced from cells, batteries or the mains 3. that there are a range of appliances in the home, which use electricity. 4. that we can represent components by symbols. 5. that current electricity flows in conductors but not in insulators. 6. that a complete path is needed from one side of the battery to the other for electricity to flow. 7. how a switch works. 8. that there are two types of circuit, series and parallel. 9. that current is measured in Amps. 10. that current is measured using an ammeter. 11. how to connect and use an ammeter. 12. that in a series circuit, the current is the same all the way round the circuit. 13. that in a parallel circuit, the current is shared but not lost or used up. 14. that the current in a series circuit depends upon the number and type of components used. 15. that a battery is a store of electrical energy. 16. that voltage is a measure of the amount of energy or push given to the current. 17. that more cells in series equals more voltage. 18. that the effect of voltage upon current and bulb brightness. 19. that an electric current causes a wire to become hot. . 20. that the bigger the current, the higher the temperature of the wire. 21. that if too much current flows, the wire will melt. Hope you find it useful. Your feedback is much appreciated.