Chemistry - Chapter 1 Test Form B

Which part of the illustration below shows the particles in a heterogeneous mixture? a. a b. b c. c d. d

a. a

A nonmetal is usually a. brittle. b. malleable. c. a good conductor. d. used to make jewelry.

a. brittle.

Noble gases are in Group 18, and are best known because they are a. unreactive. b. excellent conductors. c. rare. d. lanthanides.

a. unreactive.

Four of these observations give evidence that air is a mixture rather than a compound. Which statement does not give such evidence? a. Air has a variable composition. b. Air at STP has a mass of about 1.29 g/L. c. About one percent argon is found in most samples of air. d. Liquid air can be separated into various gases by fractional distillation. e. There is no apparent chemical action when the constituents of the atmosphere are mixed in the proportions usually found in air.

b. Air at STP has a mass of about 1.29 g/L.

A compound is A. a pure substance that cannot be broken down into simpler, stable substances. b. a substance, made of two or more atoms that are chemically bonded that can be broken down into simpler, stable substances. c. the smallest unit of matter that maintains its chemical identity. d. any substance, whether it is chemically bonded or not.

b. a substance, made of two or more atoms that are chemically bonded that can be broken down into simpler, stable substances.

Plasma is the fourth state of matter. In the plasma state a. atoms gain electrons. b. atoms lose electrons. c. atoms form molecules. d. atomic nuclei break down.

b. atoms lose electrons.

Matter includes all of the following except a. air. b. light. c. smoke. d. water vapor.

b. light.

A state of matter in which a material has no definite shape but has a definite volume is the ________ state. a. gas b. liquid c. plasma d. solid

b. liquid

All known chemical elements are organized into groups based on similar chemical properties in the a. chemical chart. b. periodic table. c. element chart. d. None of the above

b. periodic table.

The two most important properties of all matter are a. the ability to carry an electric current well and to hold electric charge. b. taking up space and having mass. c. being brittle and hard. d. being malleable and ductile.

b. taking up space and having mass.

A mixture is a. a combination of pure substances bonded chemically. b. any substance with a uniform composition. c. a blend of any two or more kinds of matter, as long as each maintains its own unique properties. d. any group of elements that are chemically bonded to one another.

c. a blend of any two or more kinds of matter, as long as each maintains its own unique properties.

A homogeneous mixture is also called a. chemically bonded. b. a compound. c. a solution. d. a solute.

c. a solution.

Which of the following is an example of a heterogeneous mixture? a. a gold ring b. seawater c. granite d. sucrose

c. granite

A student recorded the following while completing an experiment. Color of substance: yellow, shiny powder Effect of magnet: some of the powder was attracted The student should classify the substance as a(n) a. element. b. compound c. mixture d. plasma

c. mixture

Which of the following is an extensive property of matter? a. melting point b. boiling point c. volume d. density

c. volume

A chemical change occurs when a. dissolved minerals solidify to form a crystal. b. ethanol is purified through distillation. c. salt deposits form from evaporated seawater. d. a leaf changes color in the fall.

d. a leaf changes color in the fall.

Which of the following is not a physical change? a. grinding b. cutting c. boiling d. burning

d. burning

A method of obtaining oxygen that illustrates a physical change and does not involve a chemical change is a. heating mercuric oxide. b. heating potassium chlorate. c. decomposition of hydrogen peroxide. d. distillation of liquid air. e. electrolysis of water.

d. distillation of liquid air.

The liquid state of matter can be described as a. having definite shape and definite volume. b. having neither a definite shape nor a definite volume. c. having lost electrons owing to energy content. d. having a definite volume but not a definite shape.

d. having a definite volume but not a definite shape.

The horizontal rows on the periodic table are called a. actinides. b. families. c. elements. d. periods.

d. periods.