Balancing Equations And Chemical Reactions: Quiz
(175).jpg "Balancing Equations And Chemical Reactions: 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.
- 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
Questions: 10 | Attempts: 43291 | Last updated: Aug 26, 2021
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