Matter: Physical Changes vs Chemical Changes Explained

The video introduces the concept of matter, explaining that everything in the world is made of matter. It then distinguishes between physical and chemical changes, providing examples to illustrate each type. Physical changes do not alter the type of matter, while chemical changes do. The video concludes with a summary of these concepts.

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

• Elements

• Atoms

• Matter

• Energy

Which type of change involves the type of matter staying the same?

• Nuclear change

• Biological change

• Physical change

• Chemical change

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

• No change

• Chemical change

• Reversible change

• Physical change

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

• Biological change

• Nuclear change

• Physical change

• Chemical change

What happens to the type of matter when logs are burned in a fire?

• It multiplies

• It disappears

• It changes

• It remains the same

When a metal gate rusts, what type of change is it undergoing?

• No change

• Chemical change

• Reversible change

• Physical change

What type of change occurs when ice melts into water?

• Chemical change

• Nuclear change

• Biological change

• Physical change

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

• Rusting iron

• Baking a cake

• Burning wood

• Cutting hair

What is the main difference between physical and chemical changes?

• Chemical changes are faster than physical changes

• Physical changes involve a change in the type of matter, chemical changes do not

• Chemical changes involve a change in the type of matter, physical changes do not

• Physical changes are reversible, chemical changes are not

Which of the following is NOT an example of matter?

• Tree

• Air

• Light

• Water