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19 Cards in this Set
- Front
- Back
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Physical |
In a_______ change, matter changes in size, shape, or state without changing identity, |
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atoms |
Chemical changes occur when_____ link together in new ways. |
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Chemical Change |
A change in matter that produces a new compound with different properties from the original is a(n)_________ |
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reaction |
A chemical______ is a chemical change of original substances before a chemical change. |
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reactant |
A(n)______ is one of the original substances before a chemical change. |
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The new substance produced by a chemical reaction are called_____ |
products |
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In the reaction between baking soda and vinegar, the baking soda and vinegar are the reactants, and _______, water, and sodium acetate are the products. |
Carbon Dioxide |
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When a chemical change has occurred: |
1.A color change 2. Formation of a gas, and the formation of light and 3. Heat |
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Chemical change |
identify changes, color, gas, light- heat |
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Physical |
no identity change, stays shape, state |
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When blueberry juice is mixed with a solution of baking soda, it turns a(n)____ color. |
greenish |
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The______ that form when a solution containing dissolved baking soda and lemon juice are mixed indicates that a chemical change has taken place. |
bubbles |
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When you light a match, it gives off____ and _____. |
light, heat |
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As a cake bakes, a chemical reaction turns the baking soda into sodium carbonate, steam, and ____ gas, causing the cake to rise. |
Carbon Dioxide |
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The chemical reaction involving baking soda is triggered by _____. |
heat |
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The silver sulfide forms when silver reacts with sulfur or ______ _____ in foods or the air. |
Hydrogen Sulfide |
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Iron oxide is commonly known as ____. |
rust |
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Physical changes can sometimes be easily_____. |
reversed |
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In general chemical changes are______ to reverse. |
different |
