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WorksheetsScience 24 - Chapter 2 Quiz
Total questions: 11
Worksheet time: 6mins
Which of the following is evidence that a chemical reaction has occurred?
there is a change of state
a new substance is produced
no new substances are formed
none of the above
What type of reaction is the following?
gasoline (FUEL) + oxygen ---> carbon dioxide + water + energy
combustion
neutralization
energy
decomposition
Which of the follow is NOT an example of a chemical reaction?
Using baking soda and vinegar to make a toy volcano
Rusting of a metal
Burning of firewood
Leaves changing colour in the fall
Use the following reaction to answer the question.
Fuel + oxygen ---> carbon dioxide + water + energy
It releases energy and is endothermic
It absorbs energy and is endothermic
It releases energy and is exothermic
It absorbs energy and is exothermic
When you have an upset stomach you will sometimes take an antacid. The antacid contains magnesium hydroxide which reacts with your stomach acid to produce water and salt. What type of reaction is this?
combustion
neutralization
energy
decomposition
Which of the following is true about a reaction that needs energy to happen?
It releases energy and is endothermic.
It absorbs energy and is endothermic.
It releases energy and is exothermic.
It absorbs energy and is exothermic.
Use the following reaction to answer the question.
Acid + Base --> Water + Salt.
The water and the salt would be classified as what?
Products
Energy
Waste Material
Reactants
What two products are present in a Combustion Reaction?
Carbon Dioxide and Water
Water and Fuel
Energy and Carbon Dioxide
Fuel and Oxygen
Boiling water so it changes from a liquid to a gas is an example of a Chemical Reaction.
True
False
Select ALL that are correct!! (You may select MORE than ONE answer... then submit)
Which of the following is evidence that a chemical reaction has occurred?
change in colour
gives off heat
precipitate formed
smell of a gas present
Select ALL that are correct!! (You may select MORE than ONE answer... then submit)
What are the Products of a Combustion Reaction?
Energy
Oxygen
Carbon Dioxide
Water
