The Changing Phases of Matter: Introduction

Which of the following is an example of a phase change in matter?

• A car accelerating

• Clouds forming in the sky

• A plant growing

• A rock eroding

What is a phase of matter?

• A form of energy

• A unit of temperature

• A state in which matter can exist

• A type of chemical reaction

How does matter change from one phase to another?

• By changing its chemical composition

• By altering its temperature or pressure

• By increasing its mass

• By changing its color

Why do phase changes occur?

• Because of gravitational forces

• As a result of magnetic fields

• Due to changes in energy levels

• Due to electrical currents

Why are phase changes important to us?

• They are used in cooking recipes

• They are essential for weather patterns and daily life

• They help us understand the universe

• They are important for building structures