Content Benchmark P.12.A.6
Students know chemical reactions either release or absorb energy. E/S
Sample Test Questions
1st Item Specification: Identify the presence of energy as a component of every chemical
reaction.
Depth of Knowledge Level 1
1.
Burning fuel, combining baking soda and vinegar, and decomposing water into hydrogen
and oxygen are examples of chemical reactions. Which statement correctly identifies what
occurs in all chemical reactions?
A. Matter is either created or destroyed.
B. Energy is either created or destroyed.
C. Matter is converted into energy.
D. Energy is transferred from one form to another.
2.
Which of the following statements is true about the role of energy in all chemical reactions?
A. All chemical reactions use energy to create matter.
B. All chemical reactions convert matter into energy.
C. All chemical reactions either release or absorb energy.
D. All chemical reactions either create or destroy energy.
3.
Photosynthesis, baking a cake, and cooking an egg are all examples of chemical reactions.
Identify the statement that correctly identifies the role of energy in each of these reactions.
A. These reactions release energy.
B. These reactions absorb energy.
C. These reactions make energy.
D. These reactions use up energy.
4.
Which of the following is necessary for ALL chemical reactions to occur?
A. Enough energy to make the reaction occur.
B. Enough matter to cause the reaction to occur.
C. The presence of a catalyst to make the reaction occur.
D. A stirring or shaking action to make the reaction occur.
5.
The burning of gasoline and cell respiration are both chemical reactions that
A. destroy matter through burning.
B. create energy from matter..
C. release thermal energy.
D. absorb thermal energy.
Depth of Knowledge Level 2
6.
A student chemistry team put iron powder, carbon, and salt water into a sealed plastic bag
with a thermometer. They recorded their initial observations of the substances in the bag
and 10 minutes later they again recorded their observations. The data table below shows
some of their initial and final observations:
Observations of substances
Initial Observations
Final observations
The iron powder and carbon mixture appears wet A brownish-red substance has formed.
The bag is filled with air.
The bag does not have as much air in it.
Mass 20 g
Mass 20 g.
Temperature 23°C
Temperature 30°C
Identify the statement below that provides evidence of the role of energy transfer in the
reaction.
A. The formation of the brownish-red substance.
B. The change in the amount of air in the bag.
C. The mass staying the same throughout the reaction.
D. The rise in temperature from 23°C to 30°C.
7.
Photosynthesis, baking a cake, and cooking an egg are all examples of chemical reactions.
Identify the statement that correctly identifies the role of energy in each of these reactions.
A. These reactions are exothermic or release heat.
B. These reactions are exothermic or absorb heat.
C. These reactions are endothermic or release heat.
D. These reactions are endothermic or absorb heat.
8.
When glucose reacts with oxygen in our body’s cells energy is released. This energy is used
to move our bodies, heat our bodies, and perform all other body functions. Our body’s
ability to use glucose in this way means that
A. glucose must contain energy.
B. glucose must contain food.
C. glucose must be changed to fat.
D. glucose and oxygen food.
9.
Flashlight batteries can be used for a limited amount of time due to which of the following?
A. All of the available mass of the chemicals in the batteries has been used up.
B. All of the available potential chemical energy has been converted into mass.
C. All of the available potential chemical energy has been converted into forms of
kinetic energy.
D. All of the available electrical energy in the batteries has been converted into heat.
10. The burning of gasoline is an example of a chemical reaction in which the chemical energy
stored in the bonds between the molecules of gasoline is converted into other forms of
energy during the burning process. Identify the true statement about the role of energy in
the burning of gasoline.
A. Chemical energy is converted into thermal energy which is released.
B. Chemical energy is converted into thermal energy which is absorbed
C. Thermal energy is converted into chemical energy which is released.
D. Thermal energy is converted into chemical energy which is absorbed.
Content Benchmark P.12.A.6
Students know chemical reactions either release or absorb energy E/S
Answers to Sample Test Questions
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D, DOK level 1
C, DOK level 1
B, DOK level 1
A, DOK level 1
C, DOK level 1
D, DOK level 2
D, DOK level 2
A, DOK level 2
C, DOK level 2
A, DOK level 2