Delight your students with this chemical and physical changes quiz. Students can work in teams or individually to answer 10 quiz questions. The questions are presented on slides with images. Here is the answer key Perfume evaporating on your skin - physical. Butter melting - physical. Digesting food - chemical. Burning fuel in a lawnmower - this one is NOT a physical change. burn (combustion) - chemical, crumble - physical, melt - physical, rust - chemical, crush - physical, freeze - physical, grind - physical, rot - chemical Fogging a mirror with your breath - physical. Mending a broken bone - chemical. Paper ripping - physical. Glass cracking when placed in cold water - physical. Slicing potatoes to cook fries - physical

To use this resource firstly print off slides 2- 12. There are 10 stations. You will need to provide the materials at each station for the students complete the investigations. Here is what you need to prepare Slide 2 Iron filings and sand - in a tray add sand and a few spoons of iron filings. Students use a magnet to collect the iron filings. Slide 3 Fizzing tablet and water - glass of water and a fizzing tablet such as Aspro Clear. Slide 4 Inflate a balloon with vinegar - bottle, measuring cups, funnels, balloon, vinegar, bicarb soda. Slide 5 Glowsticks - 2 glow sticks, 2 large beakers, 2 thermometers, 2 pieces of black card, icy cold water from the fridge, hot water from a kettle. Slide 5 Burning candle - candle, large glass jar, matches. Slide 6 Autumn leaves - a tray of autumn leaves, crayons, lithograph paper Slide 7 Melting ice investigation - 2 petri dishes, ice cubes, salt, measuring spoons. Slide 8 Milk and lemon juice - lemon juice, pipette, milk, glass beaker. Slide 9 Investigating nails - 2 trays of nails (rusted and not rusted). Slide 10 Plasticine - various colours of plasticine. Slide 11 Chalk - various colours of chalk, paper Print the recording sheet on Slide 12. Allocate the students to the different stations and allow them to complete the investigation and record their findings on the worksheet. Gather students together to share findings. If you have time rotate students to another station. Gather students together and conclude by sharing the Conclusions on the PowerPoint.

The “Catch a falling ruler” powerpoint explains to students how to conduct an investigation with a partner to explore their ‘reaction time’ when a 1 metre ruler is held at their eye level and then dropped. The student must grasp the ruler and record their results for 5 trials. This product also includes review questions to evaluate the investigation. There is a final slide to explain ‘reaction time’. The results could be graphed in a line graph.

For each pair of students make up a small tray containing the following - blob of plasticine piece of paper a marble a balloon rubber band The students test each material and then record their findings on the worksheet.