Free Printable Chemistry Heat Test Review

1.

Which layer of Earth do scientists believe is most likely made of solid metal, mostly iron?

a)

Crust

b)

Mantle

c)

Outer Core

d)

Inner Core

2.

Which layer of the Earth is the thinnest?

a)

Crust

b)

Mantle

c)

Outer core

d)

Inner core

3.

What statement describes the heat that results from the radioactive decay of elements deep in Earth's interior?

a)

It originally came from our sun

b)

It is the reason the inner core is solid

c)

It drives the convection currents in the mantle

d)

It heats the atmosphere and makes life possible.

4.

The ________ is a measure of the average kinetic energy of a substance.

a)

heat

b)

thermal energy

c)

temperature

d)

conductor

5.

What happens when ice cubes melt in a glass?

a)

Heat travels from the ice to the warmer water.

b)

No energy is transferred.

c)

Heat is transferred from the warmer water to the ice cubes.

d)

The water warms up due to the humidity

6.

In an exothermic reaction, energy is ________the surroundings making the temperature of the surroundings ________. To your hands it feels _______.

a)

absorbed from, decrease, cold

b)

released to, increase, warm

c)

released to, decrease, cold

d)

absorbed from, increase, warm

7.

How much energy is being absorbed to break the reactants apart?

a)

40 kJ

b)

60 kJ

c)

20 kJ

d)

- 20 kJ

8.

How much energy is released when the products form?

a)

-80 kJ

b)

60 kJ

c)

20 kJ

d)

- 20 kJ

9.

What is $\Delta H$ for the reaction?

a)

-80 kJ

b)

60 kJ

c)

20 kJ

d)

- 20 kJ

10.

Is this reaction endothermic or exothermic?

a)

endothermic

b)

exothermic

11.

What happens to the particles in matter when they cool down?

a)

particles remain in place

b)

particles speed up

c)

particles slow down

d)

particles disappear

12.

__________is heat transfer or movement by direct contact, usually through solids.

a)

Conduction

b)

Convection

c)

Radiation

13.

Heat that is transferred or moved in circle currents through liquids or gases is __________________.

a)

radiation

b)

convection

c)

conduction

14.

During convection, particles rise because they are

a)

cold and more dense

b)

warm and less dense

15.

What line segment represents only the solid state?

a)

A-B

b)

B-C

c)

C-D

d)

D-E

16.

Which phase change process is happening at D-E?

a)

freezing

b)

vaporization

c)

sublimation

d)

melting

17.

In an endothermic reaction energy is released to the surrounding.

a)

True

b)

False

18.

Where are tectonic plates located?

a)

inner core

b)

outer core

c)

mantle

d)

crust

19.

What is the definition of specific heat?

a)

It heats up quickly with energy added

b)

It requires more energy to change temperature

c)

The amount of heat needed change 1 g of substance by 1 K

d)

The amount of energy needed to cool a substances

20.

__________is the form of energy that is transferred between objects that are different temperatures.

Heat or Temperature

a)

Heat

b)

Temperature

21.

Is this reaction exothermic or endothermic?

H₂ + Cl₂ --> 2 HCl + heat

a)

Exothermic Reaction

b)

Endothermic Reaction

22.

How do you find the heat required to raise the temperature of 10.0 g of copper from 10.0°C to 55.0°C? specific heat of copper is 0.385 J/(g∙°C).

a)

$\frac{45}{\left(10.0\right)\left(0.385\right)}$

b)

$\frac{0.385}{\left(10.0\right)\left(45\right)}$

c)

(10.0)(0.385)(45)

d)

(10.0)(0.385)(-45)

23.

How do you find the specific heat capacity of a 15.75-g piece of metal if it absorbs 1087 joules of heat energy, and its temperature changes from 25°C to 175°C?

a)

$\frac{1087}{\left(15.75\right)\left(150\right)}$

b)

$\frac{1087}{\left(15.75\right)\left(-150\right)}$

c)

(1087)(15.75)(150)

d)

$\frac{\left(15.75\right)\left(150\right)}{1087}$

24.

When a piece of aluminum foil is taken out of the oven and cools from 100° to 50°, what is the change in temperature?

a)

50°

b)

0°

c)

-50^o

d)

150°

25.

How do you find the temperature change(∆t) when 100 Joules of heat is absorbed by 20.0 g of Cu? specific heat = 0.385 J/Kg

a)

$\frac{100}{\left(20.0\right)\left(0.385\right)}$

b)

(100)(20.0)(0.385)

c)

$\frac{\left(20.0\right)\left(0.385\right)}{100}$

26.

Using the bond energies given, how would you find the energy needed to break the reactants apart?

a)

2(413) + 839 + 299

b)

413 + 839 + 299

c)

2(413) + 3(348) + 2(299)

d)

2(413) + 839 + 2(299)

27.

Using the bond energies given, how would you find the energy released when products form?

a)

4(413) + 2(240) + 348

b)

4(413) + 240 + 348

c)

413 + 240 + 348

d)

2(413) + 240 + 4(348)

28.

Find $\Delta H$ for the reaction if the bond energies for reactants add up to 2263 kJ and the bond energies for products add up to 2480 kJ.

a)

-4743 kJ

b)

-217 kJ

c)

217 kJ

d)

4743 kJ

29.

When you drop something hot into something cold, the temperature of the hot object _____ and the cold object ______ until the temperatures are ______.

a)

decreases, increases, different

b)

decreases, decreases, the same

c)

decreases, increases, the same

d)

increases, decreases, the same

30.

To turn 50. g of water at $30\degree C$ to steam at $115\degree C$ what would have to happen?

a)

The water would heat from $30\degree C$ to $100\degree C$ , boil, then heat from $100\degree C$ to $115\degree C$ .

b)

The water would heat from $30\degree C$ to $115\degree C$ , then boil.

c)

The water would heat from $30\degree C$ to $115\degree C$

d)

The water would boil, then heat from $30\degree C$ to $115\degree C$ .

Chemistry Heat Test Review

Total questions: 30

Worksheet time: 35mins

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