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unit 9 practice enthalpy, rates and equilibrium

Authored by John Gray

Chemistry

10th - 12th Grade

NGSS covered

Used 11+ times

unit 9 practice enthalpy, rates and equilibrium
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The SI unit of heat and energy is the __________.

calorie

heat

joule

watt

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A catalyst works by

changing the order of the reaction
increasing the temperature
lowering the activation energy
making the activated complex

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What type of reaction is shown in the reaction pathway?

endothermic reaction
exothermic reaction

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 _?_  is the amount of energy required to raise the temperature of 1 gram of any substance 1oC.

Specific heat
A calorie
Thermal energy
Conduction

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

As 120 g of hot milk cools in a mug, it transfers 20, 000 J of heat to the environment. What is the temperature change of the milk? The specific heat of milk is 2.6 J/g·°C. (Q=mcΔT)

64 °C
1.56 °C
640 °C
cannot be determined

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If 100 g of aluminum at 145ºC gains 6,800 J of heat, what is the final temperature (Tfinal) of the aluminum? Aluminum has a specific heat of 0.897 J/gºC. (Q=mcΔT)

-69°C
0.52°C
221°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

H2 + ½ O2 --> H2O + 285kJ is an example of a(n)

Electrical equation
Heat equation
Thermochemical equation

Tags

NGSS.HS-PS1-4

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