Question

identify whether each of the following statements is true regarding the particle theory of matter and the phases of matter. mark t for true and f for false. 1. ___ the particles in a solid do not move at all. 2. _ particles in a liquid have more energy than those in a solid. 3. _ all matter is made up of tiny particles called atoms. 4. _ if you have two different substances, the particles in those substances will be identical. 5. _ particles in a gas have the least amount of energy. 6. _ particles in a substance naturally repel each other. 7. ___ liquids take the shape of their container, but have a fixed volume.

Explanation:

1. In a solid, particles vibrate in place, not completely stationary. So it's false.
2. Liquid - state particles have more kinetic energy than solid - state particles as they can move more freely. So it's true.
3. All matter is made up of tiny particles which can be atoms, molecules or ions. So the statement is false as it's too restrictive.
4. Different substances have different types of particles. So it's false.
5. Gas - state particles have the most energy as they move freely and rapidly. So it's false.
6. Particles in a substance are attracted to each other, not repel. So it's false.
7. Liquids take the shape of their container due to the ability of their particles to move and have a fixed volume as the particles are close together. So it's true.

Answer:

1. F
2. T
3. F
4. F
5. F
6. F
7. T