Understanding Changes in Matter

What are the three main categories of transformations in matter discussed in this lesson?

• Nuclear, Biological, and Physical changes

• Physical, Chemical, and Biological changes

• Physical, Chemical, and Nuclear changes

• Chemical, Nuclear, and Biological changes

Which of the following is an example of a nuclear change?

• Fusion of hydrogen into helium

• Melting of ice

• Dissolving sugar in water

• Rusting of iron

What remains unchanged during a physical change?

• The color

• The state of matter

• The chemical composition

• The temperature

Which process is an example of a physical change?

• Cooking a steak

• Burning wood

• Ripening of fruit

• Mixing flour and sugar

What indicates a chemical change has occurred?

• A change in state

• A change in size

• A change in color or smell

• A change in shape

Which of the following is a chemical change?

• Souring of milk

• Cutting wood

• Condensation of steam

• Melting gold

What type of change occurs when wood is burned in a fire?

• Physical change

• Chemical change

• Nuclear change

• No change

How is the souring of milk classified?

• Nuclear change

• Chemical change

• No change

• Physical change

What happens to sugar when it is dissolved in water?

• It becomes a new element

• It undergoes a chemical change

• It undergoes nuclear decay

• It changes its state

What type of change is the melting of gold?

• No change

• Physical change

• Nuclear change

• Chemical change