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- Chemistry Module 2

Gabby L.

Define 'energy'

The ability to do work.

pg. 36

pg. 36

Define 'work'

The force applied to an object times the distance that the object travels parallel to that force.

pg. 36

pg. 36

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Define 'heat'

Energy that is transferred as a consequence of temperature differences.

pg. 38

pg. 38

What is the First Law of Thermodynamics?

Energy cannot be created or destroyed. It can only change form.

pg. 40

pg. 40

What is potential energy?

Energy that is stored.

pg. 40

pg. 40

What is kinetic energy?

Energy that is in motion.

pg. 40

pg. 40

What is the formula to find °C?

°C = 5/9 (°F - 32)

°C = K - 273.15

pg. 45, 46

°C = K - 273.15

pg. 45, 46

What is the formula to find °F?

°F = 9/5 (°C) + 32

pg. 46

pg. 46

What is the formula to find K?

K = °C + 273.15

pg. 46

pg. 46

How large is 1 calorie (cal) in Joules (J)?

1 cal. is 4.148 J.

pg. 48

pg. 48

How much is 1 food Calorie (Cal) in chemistry calories (cal)?

1 Cal = 1000 cal

pg. 48

pg. 48

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Define 'calorie'

The amount of heat necessary to warm one gram of water by one degree Celsius.

pg. 48

pg. 48

What is the formula used to find the amount of heat absorbed or released (q)?

q = m·c·ΔT

(the amount of heat absorbed or released = mass · specific heat · change in temperature)

pg. 49

(the amount of heat absorbed or released = mass · specific heat · change in temperature)

pg. 49

Define 'specific heat'

The amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Celsius.

pg. 49

pg. 49

What is the unit for specific heat?

J/g.°C

pg. 51

pg. 51

What is the specific heat of water?

1.000 cal/g.°C

4.148 J/g.°C

pg. 53

4.148 J/g.°C

pg. 53

What is the calorimetry equation?

-q(object) = q(water) + q(calorimeter)

pg. 54

pg. 54

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