Science 8, Week 2. Evaluation

1. Which of the following statements is TRUE regarding the particle nature of matter?

• Matter is not made of tiny particles

• Particles of matter are moving all the time

• Particles of matter do not attract each other

• Spaces between the particles are filled with air

2. Which of the following has the weakest force of attraction between the particles?

• Gas

• Liquid

• Solid

• Vacuum

3. Which of the following states of matter cannot be held by you hand?

• Gas

• Liquid

• Solid

• Both Gas and Liquid

4. Why do liquids have definite volume but have indefinite shape?

• Because its particles are closely packed and have a strong attractive forces

• Because its particles are far from each other and they occupy the entire space available

• Because its particles are free to move easily and are held together by less attractive force

• Because its particles have weak attractive forces and are moving from one place to another

5. Which pair of states of matter has indefinite shape?

• Gas and solid

• Liquid and gas

• Solid and liquid

• None of the above