Introduction to Thermochemistry
Authored by Lisa Thompson
Science
11th Grade
NGSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An alloy of unknown composition is heated to 153°C and placed into 100.0 g of water at 25°C. If the final temperature of the water ws 36.4°C, and the alloy weighed 3.85 g, what is the specific heat of the alloy?
108.67 J/g•°C
1.23 J/g•°C
2.78 J/g•°C
8.67 J/g•°C
Tags
NGSS.MS-PS3-4
NGSS.MS-PS3-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How much heat is produced when 750.0 mL of water is raised from 30°C to 89°C?
8.289 Joules
160.512 Joules
185,142 Joules
185.142 Joules
Tags
NGSS.MS-PS3-4
NGSS.MS-PS1-4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many grams of water are needed to raise the temperature by 18°C, and using 345.0 J of energy?
4.58 grams
4.62 grams
4.92 grams
5.01 grams
Tags
NGSS.MS-PS3-4
NGSS.MS-PS1-4
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When thermal energy is added to a substance, the substance's particles move:
More rapidly at an increased diestance from each other.
More rapidly with less distance between each other.
More slowly with a greater distance between each other.
More slowly with a reduced distance between each other.
Tags
NGSS.MS-PS1-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A chemical reaction that absorbs heat from the surroundings is said to be __________ and has a __________ ΔH at constant pressure.
endothermic; positive
endothermic; negative
exothermic; negative
exothermic; positive
Tags
NGSS.MS-PS3-4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What kind of graph is this?
endothermic
exothermic
Tags
NGSS.MS-PS3-4
NGSS.MS-PS1-4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Heat flows from _______ to _______ objects
cooler to warmer
warmer to warmer
warmer to cooler
cooler to cooler
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-5
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