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Chemical Energy Changes

Authored by Theresa Dearman

Chemistry

10th - 12th Grade

NGSS covered

Used 41+ times

Chemical Energy Changes
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a test tube a powder is added to water. The result is observed that the temperature increased. Therefore

The rxn is endothermic and the enthalpy is positive.

The rxn is endothermic and the enthalpy is negative.

The rxn is exothermic and the enthalpy is positive.

The rxn is exothermic and the enthalpy is negative.

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Endothermic

Exothermic

Isothermic

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Endothermic

Exothermic

Isothermic

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

*A piece of metal has a mass of 43.2 grams and changes from a temperature of 45.2 C to 87.2 C. If the metal has a specific heat of 0.388 J/g C, how much heat energy was gained?

2.59 J

43.0 kJ

704 J

1020 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

*A hot rock is placed in a bucket of water and the temperature of the system becomes 35.5 C. If the rock was 1226 g and 54.6 C initially and the water was 2455 grams and 23.4 C. What is the specific heat of the rock?

1.24 J/g C

5.30 J/g C

7.00 J/g C

0.123 J/g C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which equation would you use to solve the following: Calculate the heat necessary to change 10 g of ice(s) at 0°C to 10 g of water(l) at 0°C.

q=mCΔT

q= Hv*m

q= Hf*m

PV=nRT

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

*Determine the amount of heat energy required to convert 10 grams of ice at -20 °C to steam at 125 °C.

31012 J

30292 J

33938 J

32293 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

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