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You can create printable tests and worksheets from these Grade 11 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.

1 2 3
Taking an antacid is an example of what type of reaction?
1. Combustion
2. Neutralization
3. Energy
4. Decomposition
In a chemical reaction
1. the mass of the reactants equals the mass of the products
2. the mass of the products is greater than the mass of the reactants
3. the number of atoms in the reactants and products must change
4. energy as heat must be added to the reactants
To balance a chemical equation, it may be necessary to change the
1. coefficients
2. subscripts
3. formulas of the products
4. number of the product
According to the Law of Conservation of Mass, the total mass of the reacting substances is
1. always more than the total mass of the products
2. always less than the total mass of the products
3. sometimes more and sometimes less than the total mass of the products
4. always equal to the total mass of the products
What is the Greek prefix for the number 4
1. tetra-
2. hepta-
3. hexa-
4. deca-
A chemical equation is balanced when the
1. coefficients of the reactants equal the coefficients of the products
2. reactants equal products
3. products and reactants are the same chemicals
4. subscripts of the reactants equal the subscripts of the products
Which observation does NOT indicate that a chemical reaction has occurred?
1. formation of a precipitate
2. production of a gas (bubbles)
3. heat and light
4. change in total mass of substances
$N_2(g) + O_2(g) rarr 2NO (g)$
$DeltaH = +180 (kJ)/(mol$