Properties and Changes of Matter

The video explores the concept of matter, its forms, and properties. It explains the characteristics of solids, liquids, and gases, and describes the phase changes matter can undergo, such as melting, freezing, evaporation, and condensation. The video also differentiates between chemical and physical changes, providing examples of each. A matching activity is included to reinforce learning.

What is matter?

• Only solids and liquids

• Anything that is visible

• Anything that has mass and takes up space

• Only gases

Which of the following is a property of liquids?

• They cannot flow

• They are always invisible

• They take the shape of their container

• They have a fixed shape

Which of the following is NOT a property of gases?

• They are often invisible

• Their particles are far apart

• They can fill any space

• They have a definite shape

What happens during the melting process?

• A liquid turns into a gas

• A gas turns into a solid

• A solid turns into a liquid

• A liquid turns into a solid

Which phase change involves heat being removed?

• Freezing

• Sublimation

• Melting

• Evaporation

Which process involves a gas changing directly into a solid?

• Deposition

• Sublimation

• Melting

• Evaporation

What is the process called when a solid changes directly into a gas?

• Condensation

• Freezing

• Sublimation

• Deposition

What is an example of a physical change?

• Melting ice

• Rusting iron

• Spoiling food

• Burning wood

Which of the following is a characteristic of chemical changes?

• They involve the formation of new substances

• They only occur in liquids

• They are always reversible

• They do not form new substances

What is an example of a chemical change?

• Melting butter

• Frying an egg

• Cutting vegetables

• Boiling water