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CHEMICAL THERMODYNAMICS / UNIT TEST:
CHEMICAL THERMODYNAMICS MID-UNIT -
PART 1: 4.08 MID-UNIT TEST WITH CORRECT
SOLUTIONS | GUARANTEED PASS | LATEST
2025-2026
Which example is an endothermic reaction? - Correct Answer-
the reaction in a cold pack
A copper block (90°C) is placed in contact with a lead block
(20°C), which is already in contact with an iron block (70°C).
What will happen in this situation? - Correct Answer-Heat
will flow from the copper to the lead and from the iron to the
lead until the temperatures are equal.
Assuming the substances have the same mass and are heated by
the same amount, which substance would heat up most slowly?
Use the table to identify the substance. - Correct Answer-
aluminum
1
, 2
In the coffee-cup calorimeter you used in the laboratory, which
statement is true? - Correct Answer-The water is part of the
system.
When you eat a candy bar, your body oxidizes glucose to
get energy. Where does this energy come from? - Correct
Answer-chemical bonds within the glucose molecules
What is the difference between an exothermic and an
endothermic reaction? - Correct Answer-Endothermic
reactions absorb heat.
Which example is an endothermic process? - Correct
Answer-a cold pack, cooling
Air flows according to differences in thermal energy.
If a warm air mass is located in the northeast United States
and a cold
air mass is located in the southwest United States, from
which
direction will the winds blow? - Correct Answer-
northeast
Two liquids of different temperatures are separated by a
barrier. The
hot liquid is on the left side and the cold one is on the
right side.
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CHEMICAL THERMODYNAMICS / UNIT TEST:
CHEMICAL THERMODYNAMICS MID-UNIT -
PART 1: 4.08 MID-UNIT TEST WITH CORRECT
SOLUTIONS | GUARANTEED PASS | LATEST
2025-2026
Which example is an endothermic reaction? - Correct Answer-
the reaction in a cold pack
A copper block (90°C) is placed in contact with a lead block
(20°C), which is already in contact with an iron block (70°C).
What will happen in this situation? - Correct Answer-Heat
will flow from the copper to the lead and from the iron to the
lead until the temperatures are equal.
Assuming the substances have the same mass and are heated by
the same amount, which substance would heat up most slowly?
Use the table to identify the substance. - Correct Answer-
aluminum
1
, 2
In the coffee-cup calorimeter you used in the laboratory, which
statement is true? - Correct Answer-The water is part of the
system.
When you eat a candy bar, your body oxidizes glucose to
get energy. Where does this energy come from? - Correct
Answer-chemical bonds within the glucose molecules
What is the difference between an exothermic and an
endothermic reaction? - Correct Answer-Endothermic
reactions absorb heat.
Which example is an endothermic process? - Correct
Answer-a cold pack, cooling
Air flows according to differences in thermal energy.
If a warm air mass is located in the northeast United States
and a cold
air mass is located in the southwest United States, from
which
direction will the winds blow? - Correct Answer-
northeast
Two liquids of different temperatures are separated by a
barrier. The
hot liquid is on the left side and the cold one is on the
right side.
2
