10 Item Quiz in Types of Chemical Reacions

1.) Chemical reactions obey the law of conservation of mass. This means that a balanced chemical equation must have which of the following on both sides of the equation?

• A.    same number of the same types of atoms

• B.   same number of the same types of molecules

• C.    same subscripts following the same types of elements

• D.    same coefficients preceding the same types of compounds

2.) Why is it that when more reactants are used in a chemical reaction, more products will be produced?

• A.    More reactants cause the reaction to heat up

• B.    More reactants take up the same volume

• C.    More reactants have more atoms to react to form more products

• D.    Too many products can slow down the chemical reaction yielding more products.

3.) What are the coefficients used to balance the equation, _Fe + _Cl₂ --> _FeCl₃?

• A.    1, 1, 1

• B.    2, 3, 2

• C.    3, 2, 2

• D.    4, 2, 2

4.) The chemical equation Na₂SO₄ + BaCl₂ --> BaSO₄+ 2NaCl represents which type of chemical reaction?

• A.    Combination reaction

• B.    Single Displacement reaction

• C.    Double displacement reaction

• D.    Combustion reaction

5.) What kind of reaction is represented in the equation 4Fe + 3O₂ --> 2Fe₂O₃?

• A.    Decomposition

• B.    Double Displacement

• C.    Single Displacement

• D.    Synthesis

6.) What kind of reaction is represented in the equation:

Mg + 2AgNO₃ --> Mg (NO₃)₂ + 2Ag?

• A.    Decomposition

• B.    Double Displacement

• C.    Single Displacement

• D.    Synthesis

7.) Plants can create their own food. What do we call the chemical reaction used by plants to create their own food?

• A.    Conservation of mass

• B.    Cellular respiration

• C.    Cooking

• D.    Photosynthesis

8.) It is a complex process that involves thousands of chemical reactions in the human body.

• A.    Digestion

• B.    Oxidation

• C.    Electrochemistry

• D.    Photosynthesis

9.) Niezel burns magnesium and it produces a bright flame and a white powder. How can we know that Niezel conducted a chemical reaction?

• A.    Because a new substance is formed

• B.    You should not stare at the light

• C.    Because magnesium is a metal

• D.    Because it can easily be reversed

10.) Photosynthesis is an important chemical reaction that takes place in plants. What among the following chemical equations represents the process of photosynthesis?

• A.    CO₂ + H₂O --> CH₂O + H₂O

• A.    CO₂ + H₂O --> CH₂O + CO₂

• A.    CO₂ + H₂O --> CH₂O + O₂

• A.    CO₂ + H₂O --> CH₂O + OH₂