Physical Changes: What Is a Physical Change?

The video tutorial explains the difference between physical and chemical changes. Physical changes involve alterations in size, shape, color, or appearance without changing the matter's actual makeup. An example given is tearing paper, where the paper remains the same despite being in smaller pieces. In contrast, chemical changes result in a new type of matter, as demonstrated by burning paper, which turns into ash. The video emphasizes understanding these changes through practical examples.

What is a key characteristic of a physical change?

• The matter becomes a liquid.

• The matter changes into a different substance.

• The matter disappears completely.

• The matter's appearance or form changes, but it remains the same substance.

When tearing a piece of paper, what remains unchanged?

• The substance of the paper.

• The size of the paper.

• The color of the paper.

• The shape of the paper.

Which of the following is NOT an example of a physical change?

• Melting ice.

• Breaking a glass.

• Tearing paper.

• Burning wood.

What happens to paper when it is burned?

• It changes color but remains paper.

• It increases in size.

• It turns into ash, a different substance.

• It becomes wet.

In a chemical change, what happens to the matter?

• It becomes larger.

• It transforms into a new and different type of matter.

• It changes its appearance but remains the same.

• It stays exactly the same.