Matter Transformations: Physical Versus Chemical Changes

The video tutorial discusses the concepts of physical and chemical changes in matter. It begins by defining matter as everything that takes up space. The tutorial then explains that physical changes do not alter the type of matter, while chemical changes do. Various examples are provided, such as baking a pie, cutting logs, burning wood, and rusting metal, to illustrate these changes. The lesson concludes by summarizing the differences between physical and chemical changes.

What is the term used in science to describe all the 'stuff' in the world?

• Elements

• Matter

• Energy

• Atoms

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

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

What happens to the type of matter during a chemical change?

• It becomes larger

• It remains the same

• It changes

• It disappears

When a pie is baked and its crust turns brown, what type of change is occurring?

• Both physical and chemical change

• No change

• Chemical change

• Physical change

Cutting a pie into slices is an example of which type of change?

• Chemical change

• Physical change

• Both physical and chemical change

• No change

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

• Physical change

• Chemical change

• Both physical and chemical change

• No change

If a metal gate rusts, what type of change has it undergone?

• Both physical and chemical change

• No change

• Chemical change

• Physical change

What type of change is a haircut considered to be?

• Both physical and chemical change

• Chemical change

• Physical change

• No change

Roasting a marshmallow over a fire results in what type of change?

• Both physical and chemical change

• Chemical change

• No change

• Physical change

When ice melts into water, what type of change is it?

• Chemical change

• No change

• Both physical and chemical change

• Physical change