STATE OF MATTER
1. a) Which of the following is NOT a state of matter?
i) Solid
ii) Gas
iii) Lights
iv) Liquid
b) What is the process of changing from a liquid to a gas called?
i) Melting
ii) Boiling
iii) Freezing
iv) Condensation
c) In which state of matter are particles most closely packed together?
i) Gas
ii) Liquid
iii) Solid
2. True or False:
a) In a solid, particles have a fixed position and do not move.
b) Evaporation is the process of changing from a gas to a liquid.
c) The volume of a gas can change, but the shape cannot.
d) Condensation is the process of changing from a gas to a liquid.
3. Fill in the Blanks:
a) In a __________, particles are closely packed and have a fixed shape.
b) The process of changing from a gas to a liquid is called __________.
c) The particles in a __________ have more energy and move more freely than in a solid.
d) __________ is the process of changing from a liquid to a gas at a specific temperature.
4. Answer the following questions.
a) Explain the difference between a solid, a liquid, and a gas in terms of the arrangement and movement of particles.
b) Give an example of a substance that can exist in all three states of matter.
5. Application question
a) Why do you see condensation on the outside of a cold glass of water on a hot day?
b) How does the concept of states of matter relate to the water cycle?
6. Critical Thinking Questions
a) Imagine you have a glass of ice water. Describe what happens to the ice cubes as they melt and the glass warms up.
b) Why is it important for scientists to understand the properties and behaviour of different states of matter?