Year 8 STEM - Intro to Matter

1. What is matter?

• • Anything that can be seen

• Anything that takes up space and has mass

• Anything that can be touched

• Anything that is solid

2. What are the building blocks of matter?

• Molecules

• Compounds

• Atoms

• Elements

3. Which of the following is a characteristic of solids?

• • Shape is a variable

• • Volume is a variable

• Mass is variable

• Shape is constant

4. How are the atoms or molecules arranged in a solid?

• • Loosely packed and moving freely

• • Tightly packed and fixed in place

• • Loosely packed and sliding past each other

• Very far apart and moving freely

5. Which of the following is true about liquids?

• • Volume is constant

• • Shape is constant

• • Volume is a variable

• Mass is variable

6. How do the atoms or molecules behave in a liquid?

• • They are tightly packed and fixed in place

• • They are very loosely arranged and far apart

• • They slide and roll past each other

• They are fixed in a rigid structure

7. What is true about gases?

• • Shape is constant and volume is constant

• • Shape is constant and volume is variable

• • Shape is variable and volume is constant

• Shape is variable and volume is variable

8. How are the atoms or molecules arranged in a gas?

 

• • Tightly packed and fixed in place

• • Loosely packed and sliding past each other

• • Very loosely arranged and very far apart

• Tightly packed but able to move freely

9. What happens to the state of matter when a substance is heated?

• • It can change from solid to liquid or liquid to gas

• • It always turns into a gas

• • It always turns into a solid

• It never changes

10. Which process describes a solid turning into a liquid?

• • Freezing

• • Melting

• • Evaporation

• Condensation