Cambios físicos: ¿qué es un cambio físico?

The video tutorial explains the difference between physical and chemical changes in matter. Physical changes involve alterations in appearance or form without changing the composition, such as tearing paper. In contrast, chemical changes result in a new substance, exemplified by burning paper turning into ash. The tutorial highlights that while physical changes may involve changes in size, shape, or appearance, the material's composition remains unchanged. Chemical changes, however, alter the material's composition, resulting in a different type of matter.

What remains unchanged in a physical change?

• The appearance of the matter

• The form of the matter

• The composition of the matter

• The size of the matter

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

• Cooking an egg

• Burning wood

• Rusting iron

• Melting ice

Which of the following is NOT a characteristic of a physical change?

• Change in shape

• Change in size

• Change in composition

• Change in appearance

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

• It becomes multifaceted

• It changes to a new type of matter

• It only changes in size

• It remains the same

What is the result of burning paper?

• It becomes wet

• It changes shape but remains paper

• It becomes smaller pieces of paper

• It turns into ash