Chemistry

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Chemistry

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  • 1. Multiple Choice
    45 seconds
    1 pt
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    What kind of change is a phase change?
    Physical - it's still the same substance
    chemical - it's made of chemicals 
  • 2. Multiple Choice
    10 seconds
    1 pt
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    A chemical change happens when...
    a substance is changed at the atomic level 
    bonds are broken and formed 
    a new substance is made
    all of the above! 
  • 3. Multiple Choice
    10 seconds
    1 pt
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    A catalyst  
    is added to a reaction to make it slow down 
    breaks apart and is changed 
    provides an energetic short cut to the products 
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