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Chemical Reactions

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    Vocabulary
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  • A type of change that does NOT make something new.
    Physical change
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  • A type of change that results in a new substance.
    Chemical change
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  • In this type of change, it cannot be reversed (is permanent)
    Chemical change
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  • In this type of change, it can be reversed back to what you started with.
    Physical change
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  • This is a reaction that gives off heat.
    Exothermic
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  • This is a reaction that absorbs heat
    Endothermic
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  • What are the indicators that a chemical reaction happened? (at least 2)
    Gas produced (bubbles), color change, heat or light produced
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  • Chemical or physical change?
    Physical
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  • Chemical or physical change?
    Chemical
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  • What is the law of conservation of mass?
    Matter cannot be created or destroyed.
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  • Matter cannot be created or destroyed, and it never changes. True or false?
    False
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