Chemistry Thermochemistry

Question 1

Question

Reactions that absorb hear are called [blank_start]endothermic[blank_end]

Answer

endothermic

Question 2

Question

The energy used or produced during a chemical reaction is called the [blank_start]enthalpy[blank_end]

Answer

enthalpy

Question 3

Question

[blank_start]Hess's[blank_end] law says that the (triangle H) for reactions are additive

Answer

Hess's

Question 4

Question

The [blank_start]specific heat (c)[blank_end] of a substance tell how much energy is needed to raise the temperature of 1 gram of that substance by 1ºC

Answer

specific heat (c)

Question 5

Question

1 calorie is equal to [blank_start]4.814[blank_end] joules

Answer

4.814

Question 6

Question

An [blank_start]exothermic[blank_end] reaction is one that gives off heat

Answer

exothermic

Question 7

Question

The amount of energy required to raise the temperature of 1 gram of pure water by 1ºC is exactly equal to one [blank_start]calorie[blank_end]

Answer

calorie

Question 8

Question

[blank_start]Heat[blank_end] is the type of energy that alwats flows from warmer objects to cooler one

Answer

Heat

Question 9

Question

[blank_start]Thermochemistry[blank_end] is the study of heat changes during chemical and physical changes

Answer

Thermochemistry

Question 10

Question

If a reaction is reversed, the (triangle H) for the reaction must be [blank_start]changed to opposite sign[blank_end]

Answer

changed to opposite sign

Question 11

Question

Label all the parts on the heating curve provided

Image:

Aim10 5 (binary/octet-stream)

Answer

A) Liquid: q=mc(triangle T)
B) Boil: (Traingle H)fus
C) Gas: q=mc(triangle T)

Question 12

Question

The type of reaction that absorbs heat from the surroundings

Answer

Endothermic
Exothermic

Question 13

Question

A chemical equation that includes the enthalphy change

Answer

Thermochemical equation
Phase change equation

Question 14

Question

When a reaction requires energy in order to be completed, this energy can be written on the ___ side of a chemical equation

Answer

Right
Left

Question 15

Question

The heat content of a substance

Answer

Specific Heat
Enthalpy

Question 16

Question

In order to melt a substance, energy is ___

Answer

Absorbed
Released

Question 17

Question

Describes the additive nature of chemical equations and heat changes

Answer

Hess's Law
Thermochemistry

Question 18

Question

The heat absorbed by 1 mole of a substance in boiling from a liquid to a gas at a constant temperature

Answer

(Triangle H)fus
(Triangle H)vap

Question 19

Question

The fact that equals masses of both water and copper, when supplied with identical energy amounts of energy amounts of energy heat up at different rates is due to their ___

Answer

Specific Heat
Chemical Potential Energy

Question 20

Question

How many kJ of energy can be released by a banana containing 150 calories?

Answer

A) 6.3x10^5 kJ
B) 0.028 kJ
C) 36 kJ
D) 630 kJ
E) None of these

Question 21

Question

For the question below, use the following equation: I2(s) + 62.4 kJ --> I2(g) Which of the following is true?

Answer

A) The reaction is exothermic
B) (Triangle H)= +62.4 kJ
C) (Triangle H)= -62.4 kJ
D) The reaction releases heat
E) Not enough information to tell

Question 22

Question

For the question below, use the following equation: I2(s) + 62.4 kJ --> I2(g) How much heat is involved in the production of 3.5 mole I2(g)

Answer

A) 110 kJ
B) 62 kJ
C) 220 kJ
D) 3.5 kJ
E) None of these

Next up

Chemistry Thermochemistry

Description

Resource summary

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Similar

	Created by patricia alvarez over 6 years ago