What is a physical change with examples?

Answer 1

A physical change is a change in which the appearance of an object changes but no chemical reaction takes place.

EXAMPLES:

• Crushing
• Melting
• Evaporation
• Condensation

Answer 2

A physical change is a change that does not alter the chemical composition of a substance. Examples include melting ice to form water, breaking a glass bottle into smaller pieces, or cutting a piece of paper into smaller strips.

Answer 3

Physical changes can include changes in the size, shape, texture, phase (solid/liquid/gas), or volume of a material. Its constituent molecular formula does not change, although the atoms may change their organization within the molecules.

Examples of physical versus chemical change:

PHYSICAL CHANGE

1. Aluminum foil is cut in half

2. Clay is molded into a new shape

3. Butter melts on warm toast

4. Water evaporates from the surface of the ocean

5. A juice box in the freezer freezes

6. Rubbing alcohol evaporates on your hand

7. Crumpled paper

8. Water turned into ice

9. Grating of cheese

10. Cutting of wood

CHEMICAL CHANGE

1. Rust forms on a nail left outside

2. Milk goes sour

3. You fry an egg

4. Your body digests food

5. A match is lit

6. You take an antacid to settle your stomach

7. Hydrogen peroxide bubbles in a cut

8. Food scraps are turned into compost in a compost pile

9. Gasoline is ignited

10. Jewelry tarnishes

Answer 4

Which of the following is a physical change