Balancing Equations And Chemical Reactions: Quiz

10 Questions | By MrTimm8 | Last updated: Mar 21, 2022 | Total Attempts: 639

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Balancing Equations And Chemical Reactions: Quiz - Quiz

When it comes to chemistry, students are expected to understand how to balance equations and chemical reactions. When mixed, different elements form a solution, and the changes can either be physical or chemical. Test your understanding of chemical reactions and solutions by taking the quiz below and check your notes for solutions after.

Questions and Answers

1.

A reaction that causes a chemical change is called _____.
- A.
  
  Physical change
- B.
  
  Chemical reaction
- C.
  
  A flare
- D.
  
  Light
2.

Reactants and products are both parts of _____.
- A.
  
  Chemical equations
- B.
  
  Math
- C.
  
  Nuclear fission
- D.
  
  Conservation of mass
3.

The two types of numbers in chemical equations are called _____.
- A.
  
  Exponents and coefficients
- B.
  
  Addition and subtraction
- C.
  
  Superscripts and subscripts
- D.
  
  Coefficients and subscripts
4.

Coefficients tell us how many _____are in the equation.
- A.
  
  Chemicals
- B.
  
  Molecules
- C.
  
  Atoms
- D.
  
  Reactions
5.

Subscripts tell us how many _____ are in the equation.
- A.
  
  Chemicals
- B.
  
  Molecules
- C.
  
  Atoms
- D.
  
  Reactions
6.

Endothermic reactions ____.
- A.
  
  Absorb heat energy
- B.
  
  Release heat energy
- C.
  
  Take place only in humans
- D.
  
  Cannot be written
7.

Exothermic reactions _____.
- A.
  
  Absorb heat energy
- B.
  
  Release heat energy
- C.
  
  Take place only in humans
- D.
  
  Cannot be written
8.

If energy is written on the reactants side of an equation, it likely means that ____.
- A.
  
  We need to mix energy with the other elements
- B.
  
  The law of conservation of mass
- C.
  
  Activation energy is required to start the reaction
- D.
  
  You made a mistake
9.

The energy released in reactions can be released in all of the following ways except _____.
- A.
  
  Sound
- B.
  
  In food
- C.
  
  Heat
- D.
  
  Light
10.

All of the following can affect the rate of a chemical reaction except_____.
- A.
  
  Color
- B.
  
  Concentration
- C.
  
  Temperature
- D.
  
  Surgace area