Physical and Chemical Changes

Which of the following is a sign that a chemical reaction has occurred? Options: change in shape, melting, formation of a gas, dissolving

Is melting butter for popcorn a chemical or physical change?

Which of the following is NOT an example of a physical change? Options: crumpled paper, pencil sharpening, shrunken clothing, rust

A change where one or more new substances are created.

Is change in color a physical change?

Fizzing, foaming, and burning are all examples of

Rust on an iron bar is an example of chemical change.

Why is a mixture the result of a physical change?

Is hammering wood together to build a house a chemical or physical change?

Which is an example of a physical change?

• a candle burning
• baking a cake
• evaporating water
• metal rusting