# Unit 2 - Motion of Matter

## 2a - Representing Motion of Matter

Particle diagrams for the states of matter

Evidence of particle motion in liquids

Reading related to the motion of gases and the popcorn experiment: What is a smell?

## Practice work:

2a Worksheet 1.pdf
2a WS 1 Key.pdf
2a Worksheet 2.pdf
2a WS 2 Key.pdf

You should be able to:

• Depict the motion of matter for gases, liquids, and solids
• Describe the properties of the three phases of matter
• Solids have a fixed size and shape at a constant temperature
• Liquids have a fixed size, but no fixed shape at a constant temperature (they flow)
• Gases don't have a fixed size or shape (they fill the space of whatever container they're in)
• Explain and apply the relationship between motion of matter and temperature (higher temps, faster particles)
• Depict how temperature affects the motion of matter using a particle diagram
• Predict the large-scale effects of temperature change based on ideas of particle motion

## 2b - Properties of Gases

2b Worksheet 1.pdf
2b WS1 Key.pdf
2b Worksheet 2.pdf
2b WS2 Key.pdf
2b Worksheet 3.pdf
2b WS3 Key.pdf

You should be able to:

• Describe pressure of gases as a measure of how often and how hard particles collide
• Explain how the atmospheric pressure works to suspend a column of liquid in a barometer
• Explain how a straw works and how the atmosphere pushes matter into a vacuum
• Explain how changing volume, temperature, and number of particles affects the pressure of a gas
• Calculate changes in pressure of a gas when there's a change in number of particles or volume
• Calculate changes in volume when there's a change in pressure or number of particles
• Sketch particle diagrams that correspond to the changes in properties of a gas
• Explain the significance of Absolute Zero in relation to particle motion
• Convert temperatures from degrees Celsius to Kelvin
• Predict changes in pressure based on changes in temperature when measured in Kelvin