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Science Test Review

QuestionAnswer
Is lighting a match a chemical or physical change? Chemical change
What are some examples of chemical changes? A piece of metal rusting, wood burning, or a batter being baked
What is a chemical reaction? A release of energy as a result of two or more chemicals mixing together
What are some examples of physical change? Clay being molded into a shape, ice being melted, or a piece of paper being ripped in half
What is a physical change? A change in a chemical's state of matter or shape
What is a chemical change? A change in a chemical's identity and/or properties
What subatomic particle is responsible for chemical reactions? Electrons
What is a mixture? A substance made up of two or more chemicals being mixed together
Is a car being dented a chemical or physical change? Physical
What are some ways that Styrofoam can undergo chemical changes? Burning it or putting acetone on it
What are some ways that Styrofoam can undergo physical changes? Ripping it, carving it, or smashing it
Is food being digested a chemical or physical change? Chemical
What kind of change is baking a batter (of some sort)? Chemical
What are some signs of a chemical reaction? Production of gas, color change, a precipitate is formed, light is produced, and/or heat is produced
Melting ice is a chemical change (True or False). False
Is saltwater a mixture (it's salt and water)? Yes
How is burning a book a chemical change? It changes the book's properties and it's chemical identity
Is putting water through electrolysis a chemical change? Yes
What kind of change is boiling water and why? Physical, the state of matter has been changed from liquid to gas
What is Andy N's real name? Jartin
Created by: lcook111