Test Unit 9 Thermochemistry
Authored by Orlando Vega
Science
9th - 12th Grade
NGSS covered
Used 6+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An equal mass sample of each substance absorbs 50 J of heat. Identify the substance that undergoes the largest temperature change.
lead
C = 0.13 J/goC
granite
C = 0.79 J/goC
dry air
C = 1.01 J/goC
ice
C = 2.11 J/goC
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
As kinetic energy of molecules increases, ______
Temperature increases.
Temperature decreases.
Temperature is not affected by kinetic energy.
Tags
NGSS.MS-PS1-4
3.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
A sample of a compound has a mass of 77 g and a specific heat of 0.885 J/g0C. In order to increase the temperature by 25 degrees Celsius, calculate heat energy needed. ( )
-3.48 J
3.48 J
1704 J
-1704 J
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
NGSS.MS-PS3-5
4.
CATEGORIZE QUESTION
5 mins • 2 pts
Identify the following as examples of Kinetic Energy or Potential Energy.
Groups:
(a) Kinetic Energy
,
(b) Potential Energy
Food sitting on a table
A battery
A moving vehicle
Gas molecules at 100C
A cell phone with no battery power
Ice melting
Tags
NGSS.MS-PS3-5
5.
CATEGORIZE QUESTION
5 mins • 3 pts
Identify the following as examples of Endothermic or Exothermic processes.
Groups:
(a) Endothermic
,
(b) Exothermic
Condensation
Combustion reaction
Freezing
Melting
Evaporation
Reaction container is hot to the touch
Sublimation
Reaction container is cold to the touch
Tags
NGSS.MS-PS1-4
6.
CATEGORIZE QUESTION
5 mins • 4 pts
Identify the following reactions as Endothermic or Exothermic reactions.
Groups:
(a) Endothermic
,
(b) Exothermic
CH4 + 2O2 --> CO2 + 2H2O + Energy
Energy Reactants > Energy Products
3CO + 2Fe + Energy --> 3C + Fe2O3
Energy Products > Energy Reactants
2H2 + O2 --> 2H2O ΔH = -75 kJ
CaCO3 --> CaO + CO2 ΔH = +178 kJ
Q = - 45,000 J
Q = +5,000 J
Tags
NGSS.MS-PS3-4
NGSS.MS-PS3-5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Define Temperature
Measure of the average kinetic energy of molecules.
Measure of the heat energy of molecules.
Measure of heat flow of molecules.
Measure of the amount of energy absorbed by molecules when heated.
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