Name:

Particle Theory of Matter Worksheet Use your prior knowledge, and your textbook (Section 4.1: pages 138-140 of Pearson – Investigating Science 9) to help you answer the following questions. 1. Define Matter, Mass and Volume: Matter: Mass: Volume:

2. Define: Particle Theory of Matter: _____ Complete the following statements that summarize the points of the particle theory of matter: i. All matter is made up of extremely tiny objects called _____ and e ach pure substance has its own kind of particle. These particles are _____ to each other, but different from the particles of other pure substances. Explanation: _____ ii. All particles have _____ between them. Explanation of spaces between a liquid, solid and gas: _____ iii. Particles present in matter are always in _____. Particles at high temperature move at a _____ rate than particles at lower temperature. Explanation of movements in a liquid, solid and gas: _____ iv. The particles in a substance _____ each other. Explanation of attraction in a liquid, solid and gas: _____

3. Complete the following table to characterize particles in the three states of matter: State

Diagram illustrating particles

Relative particle distance Relative particle rate of motion Relative particle attraction

Relative volume Shape in relation to its container Compressibility

CHANGES OF STATE: 1:

2:

3:

4:

5:

6:

Solid

Liquid

Gas

Initial State Solid

Final State

Change of State

Heat added or removed?

Liquid

melting

added

Solid Liquid Liquid Gas Gas 4. Explain the following phenomena using particle theory concepts: a) Sidewalks are designed with cracks between the slabs.

b) If someone is wearing perfume, the people closest smell it first, and only later do people farther away.

c) Air needs to be added to a car's tires in the winter to keep them at the proper pressure.

d) A balloon placed in the fridge contracts.

e) When a kettle of water boils, steam comes out of the spout.

f) You can see the steam coming out of a kettle at first, but then it disappears.

g) When someone bakes bread in the kitchen, the smell spreads through the entire house.

h) An aerosol can explodes when heated in a fire.