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3.4 Thermochemistry

Authored by Jessie Emerson

Chemistry, Physics

10th - 12th Grade

Used 1+ times

3.4 Thermochemistry
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12 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

How many Joules of energy are required to change 10 gram of ice at -2 C to water at 20 C?

440 J
880 J
10,140 J
66,000 J

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

What is the change in temperature when 50,000 Joules of energy is added to 200 grams of water at 25 C?

0.016 C
1,500 C
63 C
0.4 C

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

How many Joules of energy are required to change 10 gram of water from 20 C to 90 C?

1400 J
2800 J
210,000 J
1,400,000 J

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

How much liquid water can you change 20 C if you apply 20,000 J?

500 g
100,000 g
250 g
350 g

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

418 J

209 J

83 J

4.18 J

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What  is the formula to calculate heat energy required to raise the temperature of any substance?

Q=mc∆t
Q=mc
Q= ½mv
m=QC

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A high specific heat means...

It heats up quickly with energy added
It requires more energy to change temperature

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