Prac - Properties of solid liquid & gas
- 1. Y E A R 7 – M AT T E R PROPERTIES OF SOLID LIQUID & GAS By S. Choi
- 2. AIM & HYPOTHESIS • Aim: To investigate the properties of solid, liquid & gas. • Hypothesis: Write your own hypothesis in your
- 3. EQUIPMENT • 3 × balloons of different shapes. • 5 × small blocks or density cubes • 1 × large syringe • 1 × large beaker of water
- 4. RISK ASSESSMENT Risk Injury Prevention
- 5. METHOD (PART 1) – SHAPE 1. Insert the blocks into a balloon. Record the shape of the blocks in the results table. Remove the blocks. 2. Blow the balloon in TWO breaths. Record the shape of the air blown in the results table. Remove the air. 3. Now insert some water into the balloon, just enough to fill the balloon. Record the shape of the water in the results table. Remove the water. 4. Repeat steps 1-3 with other TWO balloons.
- 6. METHOD (PART 2) – COMPRESSION 1. Insert the blocks into the syringe squeeze the syringe. Record observation in the results table. Remove the blocks. 2. Insert air into the syringe, block the tip of the syringe with your fingers and then squeeze the syringe. Record observation in the results. Remove the air. 3. Insert water into the syringe, making sure there are NO air bubbles. Block the tip of the syringe with your fingers and then squeeze the syringe. Record observation in the results. Remove the water.
- 7. RESULTS & OBSERVATIONS Objects States of matter Shape of the object Balloon 1 Balloon 2 Balloon 3 Blocks solid Air gas Water liquid Objects States of matter Squeezable? Blocks solid Air gas Water liquid
- 8. DISCUSSION 1. Copy & complete the table below. 2. Using your results, explain why you would NOT want to use water to build a house. 3. Using your results, explain why air bed is more comfortable than a solid marble bed. States of matter Does it keep its shape? Can it be compressed (squeezed)? Solid Liquid Gas
- 9. CONCLUSION • Write your own conclusion in your experimental report. Make sure your conclusion supports OR rejects your hypothesis.