Practice Test Phy Science

Matter that has a uniform and unchanging composition is called a pure substance.

True

A change in state of matter is a physical change.

True

A change of state is a chemical change because ice and water do not resemble one another.

False

An alloy is a special type of homogeneous mixture.

True

The properties of a compound are the same as the properties of the element that is present in the largest proportion of the compound.

False

Seawater is a substance.

False

The kinetic molecular theory describes the behavior of matter in terms of particles in motion.

True

According to Boyle’s law, the volume of a gas is inversely proportional to its pressure at constant temperature.

True

The combined gas law states the relationship among pressure, temperature, and volume of a fixed amount of gas.

True

A relationship in which one variable increases as the other variable decreases is an inverse relationship.

True

When using Charles’s law, temperature must be expressed in degrees Kelvin.

True

For a fixed amount of gas, a change in one variable (pressure, temperature or volume) affects the other two.

True

A temperature of 55°F is approximately equivalent to 13°C.

True

Which is the state of matter that has a definite shape and definite volume?

solid

\n Which is the state of matter that has an indefinite shape and definite volume?

liquid

Which is the state of matter shown in this figure?

gas

Which is the state of matter shown in this figure?

liquid

Which is the state of matter shown in this figure?

solid

Which is the state change in which a solid becomes a liquid?

melting

Which is the state change in which a gas becomes a liquid?

condensation

Which is the type of separation technique being demonstrated in the figure?

filtration

Which is the separation technique that relies on the different boiling points of the parts of the mixture?

distillation

Which is a compound?

carbon dioxide

Which is a chemical property of copper?

reacts in air to form a green layer

A milkshake is sipped through a straw at the noted pressure. The straw contains 5.0 mL of liquid. How much liquid is consumed at 0.092 atm?

3\.9mL

Hospital patients are administered oxygen from an pressurized hyperbaric oxygen chamber. 600.0 L of oxygen is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure?

3\.2 x 104 L

A balloon is filled with 3.50 L of water at 24.0°C and 2.27 atm. The balloon in the figure is placed outside on a hot day, what is the volume of the balloon (assuming constant pressure)?

3\.62 L

A mixture containing particles that settle out if left undisturbed is a:

suspension

The liquid illustrated is an example of a/an:

colloid

Three examples of physical change are ____.

boiling of water, bursting of a balloon, and crumpling a piece of paper

Which term is described as the amount of matter in an object?

mass

Which term describes the amount of mass contained per unit volume?

density

An object has a mass of 26.94 grams and a volume of 2.568 cubic centimeters. What material is it likely to be made of?

silver

Which value has only 4 significant digits?

6\.930

The accepted value for the density of iron is 7.87 g/cm3. A student records the mass of a 20.00-cm3 block of iron as 153.8 grams. What is the percent error for the density measurement?

2\.29%

Which is the product of these numbers, to the appropriate number of significant digits? \n 56.2 × 9.2057 =

517

How many significant digits are in the value 530,405,000?

6

A bottle contains 3.100 mL of a liquid. The total mass of the bottle and the liquid together is 6.300 g. The mass of the empty bottle is 4.240 g. What is the density of the liquid? 

0\.665 g/mL

A process that involves one or more substances changing into new substances is known as a ___ change.

chemical

During the deposition process by which atmospheric carbon dioxide undergoes a phase change to form solid carbon dioxide, energy is___. (absorbed or released)

condensed

A student records the temperature of a mixture of ice and rubbing alcohol as -3.8 K. Is this a valid measurement? Answer only yes or no.  

no

The distance between the earth and the sun is 90.0 million miles. Calculate this distance in meters up to three significant digits.

145,000,000,000

Convert 600 mg to grams.

0\.6 g