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Stack #4641895

QuestionAnswer
Catalyst A substance that speeds up a chemical reaction.
Chemical Change A type of change in which a new substance is formed. For example: burning something.
Physical Change A type of change in which a new substance is NOT formed. For example: water boiling.
Oxidizer A chemical that provides a lot of oxygen to help things burn.
Carbon Dioxide A gas without any color or smell that is commonly found in soda. It is also called CO2 and comes out the back of a car or bus that is running.
Hydrogen A gas less dense than air that has no color or smell. It is extremely flammable meaning it can burn.
States of Matter The main forms matter can exist in: Solid, Liquid and Gas (also plasma but that is less common on earth).
Created by: user-1974712
 

 



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