Physical Changes and Material Properties Quiz

What is the key concept 1 of the lesson?

• Demonstrating physical changes

• Analyzing material combinations

• Observing chemical changes

• Studying new substances

What happens when wood is cut or sanded according to the lesson?

• The wood becomes softer

• The wood becomes heavier

• The properties of wood change

• A new substance is created

What is the key concept 2 of the lesson?

• Analyzing chemical reactions

• Studying the properties of gases

• Creating new substances from materials

• Selecting materials for specific use based on their physical properties

Why is cardboard great for shipping but a poor choice for making a boat?

• It would soak up water and sink

• It is lightweight

• It is sturdy enough for shipping

• It is waterproof

What is the reason for combining specific materials according to the lesson?

• To study the properties of liquids

• To perform actions that the parts alone cannot do

• To observe chemical reactions

• To create new substances

What happens when cotton fabric is cut and sewn into an article of clothing?

• A new substance is formed

• The fabric becomes softer

• The fabric changes color

• No new substance is formed

What is the main reason for using plastic containers in the refrigerator?

• It is great for heating over a campfire

• It is waterproof

• It is heat resistant

• It is lightweight

What is the reason for combining gears, a crystal lens, dial, and wristband according to the lesson?

• To study the properties of gases

• To perform actions that the parts alone cannot do

• To create a new substance

• To observe chemical reactions

What is the reason for using wood for construction according to the lesson?

• It can be cut or sanded into new shapes

• It is waterproof

• It is lightweight

• It is great for heating over a campfire

What happens when an ice cube melts according to the lesson?

• The ice changes color

• The ice becomes heavier

• No new substance is formed

• A new substance is formed