States of Matter: Solid, Liquid, Gas
Read each question carefully and write your answers in the spaces provided.
Name: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Date: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Score: \_\_\_\_ / 8
Questions
1. Fill in the blanks.
Matter exists in three main states: \_\_\_\_\_\_\_\_\_\_\_\_\_\_, \_\_\_\_\_\_\_\_\_\_\_\_\_\_, and \_\_\_\_\_\_\_\_\_\_\_\_\_\_.
2. Fill in the blanks.
A solid has a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ shape and a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ volume.
A liquid has a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ shape but a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ volume.
A gas has a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ shape and a \_\_\_\_\_\_\_\_\_\_\_\_\_\_ volume.
3. Multiple choice. Circle the correct answer.
Which of the following is a liquid at room temperature?
A) Ice cube B) Milk C) Steam D) Rock
4. Sort it out!
Write each item from the box in the correct column of the table.
> Word box: iron nail · orange juice · oxygen · wooden block · honey · water vapour · ice · helium
| Solid | Liquid | Gas |
|---|---|---|
5. Multiple choice. Circle the correct answer.
What happens to water when it is heated to 100 °C?
A) It turns into a solid B) It turns into a gas C) It stays a liquid D) It disappears
6. True or False.
Write T for True or F for False next to each statement.
| Statement | T or F |
|---|---|
| A gas fills the entire container it is put in. | |
| A solid can be poured easily from one cup to another. | |
| Liquid water and ice are both made of the same substance. | |
| Gases have a fixed shape. |
7. Short word problem.
Maya pours 250 mL of juice into a tall, thin glass. Then she pours the same juice into a short, wide bowl.
- Does the amount of juice change? \_\_\_\_\_\_\_\_\_\_\_\_\_\_
- Does the shape of the juice change? \_\_\_\_\_\_\_\_\_\_\_\_\_\_
- What state of matter is the juice? \_\_\_\_\_\_\_\_\_\_\_\_\_\_
- Explain why the juice changes shape but not amount:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
8. ⭐ Challenge question.
Ice → Water → Steam describes water changing states.
(a) What is the name of the process when a solid turns into a liquid?
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
(b) What is the name of the process when a liquid turns into a gas?
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
(c) If steam cools down and turns back into water, what is that process called?
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
(d) Throughout all these changes, does the water itself disappear? Explain in one sentence.
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Answer Key
1. Matter exists in three main states: solid, liquid, and gas.
(Any order is acceptable.)
2.
A solid has a fixed/definite shape and a fixed/definite volume.
A liquid has a changing/no fixed shape but a fixed/definite volume.
A gas has a changing/no fixed shape and a changing/no fixed volume.
3. B) Milk
4.
| Solid | Liquid | Gas |
|---|---|---|
| iron nail | orange juice | oxygen |
| wooden block | honey | water vapour |
| ice | helium |
5. B) It turns into a gas
6.
| Statement | T or F |
|---|---|
| A gas fills the entire container it is put in. | T |
| A solid can be poured easily from one cup to another. | F |
| Liquid water and ice are both made of the same substance. | T |
| Gases have a fixed shape. | F |
7.
- Does the amount of juice change? No
- Does the shape of the juice change? Yes
- What state of matter is the juice? Liquid
- Explanation: A liquid has a fixed volume (the amount stays the same) but no fixed shape, so it takes the shape of whatever container holds it.
8.
(a) Melting (also accept: fusion)
(b) Evaporation (also accept: vaporisation/boiling)
(c) Condensation
(d) No — the water does not disappear; it is the same water molecules changing from one state of matter to another. (Accept any reasonable sentence expressing conservation of matter.)