This document outlines an experiment to investigate the properties of solids, liquids, and gases. The experiment involves using balloons and a syringe to observe how these three states of matter behave in terms of shape and compressibility. In the experiment, blocks represent solids, air represents gases, and water represents liquids. The results show that solids maintain their shape in balloons and cannot be compressed in a syringe, while gases take the shape of their container and can be compressed, and liquids take the shape of their container but cannot be compressed.

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.