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5 Written questions

5 Matching questions

  1. Products
  2. Gasoline
  3. Breathe
  4. Chemical reaction
  5. They are rearranged
  1. a What happens to atoms in chemical reactions?
  2. b occurs when substances go through chemical changes to form new substances
  3. c When enough energy is added to start the isooctane/oxygen reaction new bonds form to make the _______.
  4. d You make use of oxygen, a product of photosynthesis, everytime you _______.
  5. e What burns in the engine of a car/boat.

5 Multiple choice questions

  1. What do plants use to convert carbon dioxide & water into glucose & oxygen?
  2. For all atoms in isooctane & oxygen to react, all of the bonds must do what?
  3. All combustion reactions are __________.
    Sometimes, endothermic reactions need more energy than they can get from their surroundings?
  5. Many diffrent chemical reacitons take place inside your body _______ of the time.
    A) part B) none C) all

5 True/False questions

  1. Carbon Dioxide and WaterWhen we exhale, what comes out?


  2. Many forms of energy.What is energy that is stored in the form of chemical bonds?


  3. Formation of a gas
    formation of a solid
    release of energy
    What is a product?


  4. Endothermic & chemicalWhat chemical reaction requires energy input?


  5. LessIn all exothermic reactions, do products have more or less energy that the reactants?


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