Chemistry Chapter 1 Test

B. semiconductors.

Metalloids are often ______ a. unreactive b. semiconductors c. lanthanides d. from outer space

C. Any substance that has a definite composition

A chemical can be defined as ___ a. a toxic substance b. an unnatural additive placed in food. c. any substance that has a definite composition. d. any substance that is not alive.

inorganic

A chemistry student is studying the formation of quartz crystals. She is studying ______ chemistry.

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

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.

C. a solution.

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

d. mass

A measure of the quantity of matter is _____ a. density. b. weight. c. volume. d. mass.

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

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.

A. brittle.

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

analytical

A scientist is using mathematical models to isolate a new chemical process. He is working in the field of _____ chemistry.

organic

A scientist is working to develop better dating methods for substances that contain carbon. He is working in the field of ______ chemistry.

physical

A scientist working to determine the properties and changes of matter and their relation to energy of a newly discovered mineral. She is working in the field of ______ chemistry.

C. always the same shape regardless of its container.

A solid substance is ____ a. always frozen regardless of its container. b. always a crystal regardless of its container. c. always the same shape regardless of its container. d. always losing particles regardless of its container.

bio

A team of scientists is working to discover how an enzyme affects blood cells in sheep. They are working in the field of ___ chemistry.

B. periodic chart.

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

A. the smallest unit of matter that maintains its chemical identity.

An atom is ____ a. the smallest unit of matter that maintains its chemical identity. b. the smallest unit of a compound. c. always made of carbon. d. smaller than an electron.

chemical

Any substance with a definite composition is a _____.

A. to solve a particular problem.

Applied research is carried out in order to ___ a. to solve a particular problem. b. by accident. c. to learn basic information. d. in order to make money.

problem

Applied research is often performed to find the answer to a particular ______.

knowledge

Basic research is performed to increase _______.

C. to gain knowledge.

Basic research is usually performed ___ a. to develop new products. b. to understand an environmental problem. c. to gain knowledge. d. to solve a particular problem.

B. the chemistry of living things

Biochemistry is the study of ___ a. properties, changes, and relationships between energy and matter. b. the chemistry of living things. c. crystals and minerals. d. carbon-containing compounds.

Iodine is a nonmetal and it is a solid at room temperature and has a crystalline appearance.

Identify as metal, nonmetal, or metalloid and give two physical properties for the element I.

It is a metal and it is a good conductor of heat and electricity; also its standard state is a solid.

Identify as metal, nonmetal, or metalloid and give two physical properties for the element Sr.

B. heterogeneous.

If a mixture is not uniform throughout, it is called _____ a. homogeneous. b. heterogeneous. c. chemically bonded. d. a solution.

A. homogeneous.

If a mixture is uniform in composition, it is said to be ____ a. homogeneous b. chemically bonded c. a solution d. a solute

product

In a bonfire, oxygen allows wood to combust, leaving behind ashes. In this process, oxygen and wood are the reactants, and ashes are the ______.

A. non-carbon related compounds.

Inorganic chemistry is the study of a. non-carbon related compounds. b. the chemistry of living things. c. mathematical modeling. d. the identification of the composition of materials.

D. a good electrical and heat conductor.

It is easy to determine whether a substance is a metal if the substance is _____ a. easy to break down into its components b. very hard c. very brittle d. a good electrical and heat conductor

B. light

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

gaseous

Matter that has neither a definite volume nor a definite shape is in the ______ state.

D. reactants

Nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are called the ____ a. products b. equilibria c. synthetics d. reactants

A. unreactive

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

D. carbon-containing compounds

Organic chemistry is the study of ___ a. properties, changes, and relationships between energy and matter. b. the chemistry of living things. c. crystals and minerals. d. carbon-containing compounds.

B. atoms lose electrons.

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.

lives

Technological development is performed to better our ____.

B. long after the basis research is complete.

Technological development often occurs ___ a. by accident. b. long after the basic research is complete. c. in order go learn basic information d. only to make money

D. periods.

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

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

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.

physical

The melting of butter is a ______ change because it does not produce any new substances.

reactants

The oxygen in air causes iron to rust. Iron and oxygen are _____ in this process, and rust is the product.

chemistry

The study of matter and changes that occur in matter best describes the science of ______.

B. taking up space and having mass

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.

compounds, elements

The two types of matter that are pure substances are ______ and _______.

C. groups.

The vertical columns on the periodic table are called _____ a. periods b. rows c. groups d. elements

physical

When examining a mineral, hardness and color are two of the properties used for identification. Hardness and color are examples of _____ properties.

C. volume

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

B. density

Which of the following is an intensive property of matter? a. amount of energy b. density c. volume d. mass

C. melting

Which of the following is not a chemical change? a. rusting b. igniting c. melting d. burning

D. burning

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