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How Matter Can Change

What is a physical change? It's a change that begins and ends with the same type of matter.
What is a chemical change? It's a change that begins with one kind of matter and ends with another.
What are examples of a physical change? Cut, crush, tear, bend, stretch
What is a change of state? When one state of matter changes to another state.
What are 3 ways matter can change state? Heating, Cooling and Evaporation
What is heating? Melting or boiling
What is cooling? Condensing or freezing
What is evaporation? A slow change of a liquid to a gas without boiling.
What is taken away or added when there is a change of state? Energy
What is rust? It's a chemical change when iron reacts with the oxygen in the air.
What is tarnish? It's a chemical change when silver reacts with the sulfur in the air.
During a chemical change, what is used or given off? Energy
What are the 3 signs of a chemical change? 1. change in color or smell, 2. bubbles or fizz, or 3. light or heat is given off.
Created by: annsinon