Exothermic and Endothermic Diagrams
7th Grade
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Exothermic and Endothermic Diagrams
Quiz
•
Science
•
7th Grade
•
Hard
+2
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an experiment, solid barium hydroxide and solid ammonium chloride are mixed together, and the temperature of the resulting mixture is measured. After some time, the formation of a liquid is observed, and the smell of ammonia gas is detected. A graph of temperature against time for the first 200 seconds of the reaction is shown below. Is the reaction exothermic or endothermic?
This cannot be determined.
Endothermic
Exothermic
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Illustrated in the reaction profiles are the changes in chemical energy during a range of processes. Which of the diagrams best describes the changes in chemical energy for a stick of dynamite during an explosion?
a
b
c
Tags
NGSS.HS-PS1-4
3.
OPEN ENDED QUESTION
1 min • 1 pt
A reaction profile diagram for a reaction is shown. How much is energy is absorbed or released?
Evaluate responses using AI:
OFF
Tags
NGSS.HS-PS1-4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which diagram represents the reaction whose Δ𝐻 is −20kJ?
a
b
c
d
Tags
NGSS.HS-PS1-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The complete combustion of methanol proceeds according to the equation: (picture). The reaction enthalpy is −715 kJ/mol.Is the combustion of methanol endothermic or exothermic?
Exothermic
Endothermic
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Illustrated in the reaction profile are the changes in chemical energy during a reaction as the reactant molecules are converted to products. Based on the reaction profile, is energy absorbed or released during the reaction?
Released
More information is needed.
Absorbed
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these diagrams represents an EXOTHERMIC reaction?
Diagram A
Diagram B
Tags
NGSS.HS-PS1-4
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