Understanding Reversible and Irreversible Changes

What is a reversible change?

• A change that cannot go back to its original state

• A change that can go back to its original state

• A change that is permanent

• A change that is temporary.

What is an irreversible change?

• A change that can go back to its original state

• A change that cannot return to its original state

• A change that is temporary

• A change that is reversible.

Melting ice is an example of a ________ change.

• Reversible

• Irreversible

Which is an example of an irreversible change?

• Melting ice

• Baking a cake

• Freezing water

• Softening butter

Cooking an egg is an example of a ________ change.

• Reversible

• Irreversible

What does temperature do to materials?

• No effect

• Causes materials to change

• Makes materials disappear

• Keeps materials the same.

Fill in the blank: Softening butter is a ________ change.

• Reversible

• Irreversible

Which is a reversible change?

• Cooking an egg

• Melting ice

• Baking a cake

• Preparing popcorn

Fill in the blank: Preparing popcorn is an example of a ________ change.

• Reversible

• Irreversible

What is a common misconception about changes?

• All changes are irreversible

• All changes are reversible

• No changes can be reversed

• Changes do not occur.