physical and chemical change

physical and chemical change

Physical change

No new substance is made

Only the state of matter is changed

Examples of phyical changes

• crushing a can

• Melting an ice cube.

• Boiling water

• breaking a glass

• mixing sand and water

• dissolving sugar and water

Chemical change

 a new substance is made

Examples of a chemical change

• rusting of iron

• baking a cake

• sour milk

• digesting food

• burning paper

• 
  

physical or chemical change?

physical change

the fruits has only undergone a physical change because the fruit salad is still made up of fruits

physical or chemical change?

chemical change

When substances made of iron are exposed to oxygen and moisture (water), rusting takes place.

Multiple Choice

When does a physical change occur?

• when molecules combine to form a compound

• when the size, shape, or state of matter changes

• when a new element is created

Multiple Choice

Which is an example of a physical change?

• Baking a cake

• wood burning

• cutting paper

Multiple Choice

When does a chemical change occur?

• When matter changes and a new substance is formed.

• When the substance stays the same

• when the size, shape, or state of matter changes

Multiple Choice

Which is an example of a chemical change?

• mixing vinegar and baking soda

• cutting a shirt into pieces

• cutting wood

Multiple Select

Which two answers are key words that describe a physical change?

• Burning

• melting

• dissolving

• ashes

Multiple Choice

Water freezes to make snow

• physical

• chemical

Multiple Choice

A cake baking

• physical

• chemical

Multiple Choice

A puddle of water evaporates

• physical

• chemical

Multiple Choice

Which change is reversible?

• physical

• chemical

Multiple Choice

Which change is irreversible?

• physical

• chemical