Topic 1, Matter On The Move

Question 1

States of Matter

Answer 1

Solid, Liquid, Gas

Question 2

Shape and Volume of the States of Matter

Answer 2

solid- definite shape, definite volume
liquid- indefinite shape, definite volume

gas- indefinite shape- indefinite volume

Question 3

5 Points to the Particle Model of Matter

Answer 3

• All substances are made of tiny particles.
• All particles in a pure substance are the same, different pure substance are -made of different particles
• The particles all have space between them
• The particles are always in motion. The speed of the particles increases when heat is added and decreases when heat is taken away.
• The particles in a substance are attracted to one another. The strength of the attractive forces depend on the type of particle

Question 4

Changes of states and What are They?

Answer 4

1. Melting/fusion- the process of changing from a solid to a liquid.
2. freezing/solidification- The process of changing a liquid to a solid.
3. Condensation/evaporation- the process of changing from a gas to a liquid.
4. Vaporization- The process of changing from a liquid to a gas. Note that evaporation is a slowere form of vaporization and boiling is a faster form of vaporization.
5. Sublimation- The process of going from a solid to a gas or a gas to a solid without going through the liquid state.
   the relationship between solid and gas is always sublimation.