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You can create printable tests and worksheets from these Grade 7 Reactions questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

What type of reaction does the following equation represent?

$FeS + 2HCl rarr FeCl_2 + H_2S$
1. synthesis reaction
2. double-displacement reaction
3. single-displacement reaction
4. decomposition reaction
What is produced as a candle burns?
1. carbon dioxide
2. water vapor
3. both of the above
All chemical reactions in living things take place in                 .
1. Dry Conditions
2. Water Solutions
3. Outside Membrane
4. Inside Membrane
Which of the following will not increase the rate of a reaction?
2. increasing the temperature of a reaction
3. decreasing the concentration of reactants
4. grinding the solid into powder
When two substances react chemically to produce a new substance, what is TRUE of the mass of the two substances compared to the mass of the new substance?
1. They have the same mass.
2. The mass of the two substances is less than the mass of the single substance.
3. The mass of the two substances is more than the mass of the single substance.