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.

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 resource includes a PowerPoint presentation and differentiated homework tasks for a lesson on Satellites for KS3 Astronomy and Space Science for Year 9. Topics include: What are satellites? What are artificial satellites and natural satellites? How do satellites stay in orbit? Differentiate between a geostationary orbit and a polar orbit. Discuss different uses of polar satellites and geostationary satellites. History and advances in satellites. Parts of a satellite Tracking space junk There is also a 6 question plenary at the end of the lesson.

This resources includes a highly visual 43-slide presentation and a short quiz on Forces and Motion. The topics explored in this lesson are: 1) What is a force? 2) What can forces do? 3) How do we measure forces? What unit do we use? 4) What are contact and non-contact forces? Give examples of each. 5) What is friction? What are two types of friction? 6) What can affect the amount of friction? 7) How is friction involved in the stopping distance of a car? 8) What forces affect speed? 9) What is gravity? What is the gravitational field strength on Earth? 10) What is weight? How is it different from mass? 11) How is weight calculated? I hope you find this resource useful. Thank you.

Homework sets and multiple choice exam practice problems to support the learning of a unit on Acids, Bases, and Salts. All questions (124 in all!) are editable and ANSWERS are provided for each!. Learners will answer questions about: • Acid-base definitions • Hydrogen ions and acidity • pH calculations • hydrogen ion and hdyroxide ion concentrations • acid and base strength • acid dissociation constant • neutralisation reactions • salts in solution • titration calculations This resource is meant to be used by teachers in the US.

Homework sets and multiple choice exam practice problems to support the learning of a unit on Chemical Kinetics and Equilibrium. All questions (102 in all!) are editable and ANSWERS are provided for each!. Learners will answer questions about: • Reaction rates • Factors affecting reaction rates • Equilbrium • Factors affecting equilbrium position • Equilbrium constant expression • Solubility equilibrium • Entropy and free energy • Rate law • Orders of reaction • Reaction mechanism This resource is meant to be used by teachers in the US.

A collection of crossword puzzles with answers to support the learning of some KS3 Science units. 1) Earth, Moon and Sun 2) Structure and Function of Living Organisms Part 1 3) Structure and Function of Living Organisms Part 2 4) Electrical Circuits 5) Sound and Hearing 6) Magnets and Electromagnets

This resource includes a 50-slide PowerPoint presentation, guided notes and many differentiated worksheets/homework assignments on the topic of PRESSURE. By the end of these lessons, pupils will know that: 1) pressure exists on surfaces, in air and in liquids. 2) pressure is measured in Pascals (Pa) 3) on surfaces, pressure is calculated by dividing force by area. 4) pressure is smaller when a force is applied over a big area because the pressure is spread out over a big area. 5) pressure is bigger when a force is applied over a small area because the pressure is confined to a small area. 6) atmospheric pressure decreases with height, 7) liquid pressure increases with depth. 8) upthrust effects floating and sinking 9) hydraulics is an application of liquid pressure (qualitative and quantitative) I hope you find this resource useful. Thank you.

This resource includes a 56 slide PowerPoint presentation. • 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

Homework sets, a practice quiz and sample test questions to support the learning of a unit on Thermochemistry. • Loads of sample multiple choice test questions • Short answer and essay questions • Homework sets • Lab Worksheet • Includes over 90 questions in all! • Great for SAT II Chemistry preparation • All questions are EDITABLE and include ANSWERS.

Several resources to support the learning of KS3 Sound and Hearing. You can find a pack with all of these resources and a very useful 50+ slide PowerPoint presentation on KS3 Sound here: https://www.tes.com/teaching-resource/ks3-sound-and-hearing-huge-resource-pack-waves-frequency-amplitude-ultrasound-the-ear-ks3-y7-y8-6317505

Resources for KS3 Science: Electrcity and Electrical Circuits

Two crossword puzzles for KS3 Structure and Function of Living Organisms. 56 clues total in these two crosswords. Answers are included.

Homework sets, a worksheet and sample test questions to support the learning of SOLUTIONS. • Includes a total of 102 questions • All questions are EDITABLE • ANSWERS are included for each question Topics include: • Properties of solutions • solubility • saturated, unsaturated and supersaturated solutions • molarity • molality • percent by mass • percent by volume • dilution calculations • colligative properties of solutions - freezing point, vapor pressure, boiling point • calculations involving colligative properties This resource is meant to be used by teachers and students in the US.

Homework sets and sample test questions to support the learning of The Chemistry of Water. • 85 Questions • All questions are editable • Answers are included Some of the topics in this unit include: • Water's unique properties • Hydrogen bonds • Homogeneous aqueous solutions • Polarity • Dissolving • Solubility • Electrolytes • Hygroscopic substances • Dissociation • Hydrates • Heterogeneous aqueous systems, colloids, suspensions and solutions • Brownian motion This resource is meant to be used by teachers in the US.

Homework sets, a worksheet and sample test questions to support the learning of Gas Properties and the Gas Laws. 74 problems in all. Can be recycled year after year. All questions are EDITABLE and all ANSWERS are included. This resource is meant to be used by teachers in the US.

This two-lesson sequence introduces learners to Aerobic Respiration. It includes: • A 27-slide PowerPoint presentation that includes many visual aids and is thoughtfully animated to allow opportunities for discussions during the lesson. • A quick practical (hands-on) activity to introduce aerobic respiration. • An interactive note-taking worksheet (double-sided A4 size) that is customized for the presentation. I find that taking notes in this manner keeps lower-level students engaged while allowing differentiation for higher achievers.