CHEM 132 test 1

An example of kinetic energy is

a coiled spring.

running water.

a tree.

natural gas.

chemical energy.

running water

The energy of motion is referred to as

work.

freezing.

specific heat.

potential energy.

kinetic energy.

Kinetic Energy

The energy associated with the motion of particles in a substance is called

temperature.

electrical energy.

heat.

chemical energy.

potential energy.

heat

The phrase "ability to do work" is a definition of

specific heat.

energy.

calorie.

heating.

cooling.

energy

Which of the following is an example of potential energy?

chewing food

water stored in a reservoir

burning wood

a fan blade turning

riding an exercise bike

Water stored in a reservoir

The energy stored in the chemical bonds of a carbohydrate molecule is

specific heat.

kinetic energy.

potential energy.

work.

a calorie.

potential energy

The primary substances of which all other things are composed are

molecules.

compounds.

elements.

electrons.

protons.

elements

Gold in a wedding ring is a(n)

compound.

heterogeneous mixture.

element.

homogeneous mixture.

None of the above.

element

Coins in a piggy bank is a(n)

compound.

heterogeneous mixture.

element.

homogeneous mixture.

None of the above.

heterogenous mixture

Air is a(n)

compound.

heterogeneous mixture.

element.

homogeneous mixture.

None of the above.

homogenous mixture

Which of the following is a physical property of both liquids and gases?

has its own shape

has a definite volume

has strong interactions between its particles

has randomly arranged particles

has large spaces between molecules

has randomly arranged particles

When a solid is converted directly to a gas, the change of state is called

freezing.

melting.

boiling.

condensation.

sublimation.

Sublimation

Which of the following does NOT involve a change of state?

melting ice

freezing water

vaporization of alcohol

sublimation of dry ice

pouring water into a vacuum-insulated bottle

pouring water into a vacuum-insulated bottle

Which of the following is a physical change?

baking a cake

dry ice subliming

fermenting grapes to produce wine

digesting a meal

a tomato ripening

dry ice subliming

The formation of a gas resulting from the escape of high-energy particles from the surface of a liquid is known as

evaporation.

deposition.

boiling.

melting.

sublimation.

evaporation

A heating curve illustrates

what a substance looks like as it is heated.

what happens to the particles of a substance as it is heated.

what happens to the heat applied as the temperature is increased.

the changes in the temperature and physical state of a substance as it is heated.

the chemical changes that occur as the substance is heated.

the changes in the temperature and physical state of a substance as it is heated.

The specific heat of a substance is the amount of heat needed to

change 1 g of the substance from the solid to the liquid state.

raise the temperature of 1 g of the substance by 1 °C.

change 1 g of the substance from the liquid to the solid state.

convert 1 g of a liquid to gas.

convert 1 g of a solid to a gas.

raise the temperature of 1 g of the substance by 1 °C.

The branch of chemistry that is the study of compounds containing carbon is called

organic chemistry

geochemistry

physical chemistry

biochemistry

general chemistry

organic chemistry

The branch of chemistry that is the study of the composition, properties, and reactions of matter is called

organic chemistry

geochemistry

physical chemistry

biological chemistry

general chemistry

general chemistry

Titanium dioxide is a chemical used in toothpaste to __________.

make the paste white

disinfect the toothbrush

keep the paste from spoiling

remove plaque

strengthen tooth enamel

make the paste white

Which of the following is a measurement of mass in the metric system?

oz

lb

Celsius

kilogram

meter

kilogram

A value of 345 mm is a measure of

density

mass

temperature

volume

distance

distance

The metric base unit for length is the

meter

inch

millimeter

kilometer

foot

meter

A value of 36 mL is a measure of

density

mass

temperature

volume

distance

volume

The metric unit for volume is the

meter

quart

liter

pint

centimeter

liter

The amount of space occupied by a substance is its

mass.

density.

weight.

length.

volume.

volume

The cubic centimeter (cm3 or cc) has the same volume as a

cubic inch.

cubic liter.

milliliter.

centimeter.

cubic decimeter.

milliliter

The measurement of the gravitational pull on an object is its

volume.

weight.

mass.

length.

size.

weight

Significant figures are important because they indicate

the accuracy of a measurement.

the number of digits on a calculator.

the number of measurements.

the precision of a measurement.

the accuracy of the conversion factor.

the precision of a measurement.

The density of a solution is 1.18 g/mL. Its specific gravity is

11.8.

0.118.

0.847.

1.18.

1.2.

1.18