Science: Solids, liquids and gases | Worksheet | PrimaryLeap.co.uk - Free Printable

Problem Overview:

The task is to fill in the missing spaces in a worksheet about solids, liquids, and gases using words from the provided word bank. The goal is to correctly identify the properties and characteristics of each state of matter.

Word Bank:

- poured
- shape
- invisible
- spaces
- liquid
- container
- solid
- gas
- tightly

Worksheet Questions:

1. All materials are either solid, ________ or gas.
2. A brick, chocolate, and glass are all ________.
3. Solids can be ________. They have a definite ________.
4. The molecules that make up a solid are packed ________ together.
5. Water, milk, and syrup are all ________.
6. Liquids can be ________ and take the shape of the ________ they are in.
7. Steam, helium, and carbon dioxide are all ________.
8. Gases are mostly ________. They will fill empty ________.
9. Steam is a ________, water is a ________, and ice is a ________.

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Solution:

#### 1. All materials are either solid, ________ or gas.
- Answer: liquid
- Explanation: Materials exist in three states: solid, liquid, and gas.

#### 2. A brick, chocolate, and glass are all ________.
- Answer: solid
- Explanation: Bricks, chocolate, and glass are rigid and maintain their shape, which is characteristic of solids.

#### 3. Solids can be ________. They have a definite ________.
- Answer: held, shape
- Explanation: Solids maintain their shape and can be held without changing form.

#### 4. The molecules that make up a solid are packed ________ together.
- Answer: tightly
- Explanation: In solids, molecules are closely packed and held in fixed positions.

#### 5. Water, milk, and syrup are all ________.
- Answer: liquid
- Explanation: Water, milk, and syrup flow and take the shape of their container, which is characteristic of liquids.

#### 6. Liquids can be ________ and take the shape of the ________ they are in.
- Answer: poured, container
- Explanation: Liquids can be poured and adapt to the shape of the container they occupy.

#### 7. Steam, helium, and carbon dioxide are all ________.
- Answer: gas
- Explanation: Steam, helium, and carbon dioxide are in the gaseous state, which means they expand to fill any container.

#### 8. Gases are mostly ________. They will fill empty ________.
- Answer: invisible, spaces
- Explanation: Gases are typically invisible and expand to fill any available space.

#### 9. Steam is a ________, water is a ________, and ice is a ________.
- Answer: gas, liquid, solid
- Explanation:
- Steam is water in its gaseous state.
- Water is in its liquid state.
- Ice is water in its solid state.

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Final Answer:

1. liquid
2. solid
3. held, shape
4. tightly
5. liquid
6. poured, container
7. gas
8. invisible, spaces
9. gas, liquid, solid

Boxed Final Answer:
\[
\boxed{\text{liquid, solid, held, shape, tightly, liquid, poured, container, gas, invisible, spaces, gas, liquid, solid}}
\]