Semester 1 Test Chemistry

The study of substances that do not contain carbon

Inorganic chemistry

Part of a system having uniform composition and properties

Phase

What is the density of an object having a mass of 8.0g and a volume of 25cm3.

0.23 g/cm3

Which group on the periodic table are the halogens?

17

How many significant figures are there in the measurement 0.00034 kg?

2

Which group on the periodic table are the alkali earth metals?

2

What is the temperature -34 degrees Celcius in Kelvin?

239 K

Convert 58 degrees C to K

331 Ks

How many significant figures are in 811.40 grams?

5

Using the periodic table, determin the number of neutrons in oxygen (16)

8

An element has an atomic number of 80. How many protons and electron are in a neutral atom of an element?

80 Protons 80 Electrons

What do 2 or more elements combine to form?

A compound

A hypothesis is...

A descriptive model for observations

Consider the chemical reaction in which carbon reacts with oxygen to produce carbon dioxide. What mass of carbon dioxide would be purchased if 12 grams of carbon reacted completely with 32 grams of oxygen? A. 44g B. 24g C. 32g D. 64g E. 20g

A. 44g

What is 5928 km expressed in scientific notation? A. 5.928 x 10^3 B. 5.928 x 10^2 C. 5,928 x 10^-3 D. 5.928 x 10^0

A. 5.928 x 10^3

A copper-colored wire changes to a darker color after it is heated and then cooled. What type of change has likely taken place to cause this color change? A. A chemical change B. A physical change C. Neither a physical nor a chemical change

A. A chemical change

One difference between a mixture and a compound is ____. A. A compound can only be separated into its components by chemical means. B. A mixture must be uniform in composition C. A mixture an only be separated into its components by chemical means D A compound is made up of more than one phase.

A. A compound can only be separated into its components by chemical means.

What is the chemical symbol for copper? A. Cu B. Na C. Ag D. Sn E. Hg

A. Cu

Which of the following materials is a pure substance? A. Diamond B. Tea C. Air D. Brass E. Gasoline

A. Diamond

Which of the following is NOT an example of matter? A. Heat B. Smoke C. Water D. Water Vapor E. Air

A. Heat

Which of the following is a chemical property? A. Reactivity with oxygen B. Freezing point C. Color D. Density

A. Reactivity with oxygen

What must occur for a process to be a chemical reaction? A. The process must involve a change in chemical properties B. The process must involve a change in mass C. The process must involve a change in physical properties D. The process must involve a change in volume.

A. The process must involve a change in chemical properties

What is not a physical property of matter?

Ability to react with oxygen

The lowest point of the Kelvin scale

Absolute zero

Closeness to true value

Accuracy

What is the name for (NH2)2(CO3)?

Ammonium Carbonate

The study of the composition of substances

Analytical chemistry

Which of the following is the best example of a quantitative measurement? A. 2.01111 B. 2.01 g C. 2.0111 D. 2.011 E. 2.01

B. 2.01 g

Which of the following is a homogeneous mixture? A. Oil in water B. Alcohol in water C. Soot in water

B. Alcohol in water

Which of the following processes does NOT involve a change in chemical properties? A. Fermenting B. Boiling C. Burning D. Rusting

B. Boiling

The study of the composition and structure of matter is the domain of which field of science? A. Biology B. Chemistry C. Physics D. Geology

B. Chemistry

Separating a solid from a liquid by evaporating the liquid is called ______. A. Emulsification B. Distillation C. Theorizing D. Condensation

B. Distillation

Which state of matter is characterized by low density and high compressibility? A. Solid B.Gas C. Liquid

B. Gas

Which state of matter has a definite volume and takes the shape of its container? A. Solid B. Liquid C. Gas D. Both B and C

B. Liquid

Which state of matter takes both the shape and volume of its container? A. Solid B. Liquid C. Gas D. Both B, and C

B. Liquid

IN the chemical reaction in which carbon, hydrogen, and oxygen absorb heat and combine to form carbon dioxide and water, which of the following is considered to be a reactant? A. Carbon Dioxide B. Oxygen C. Water D. Heat

B. Oxygen

Which of the following household item is NOT a pure compound? A. Distilled water B. Salad dressing C. Sugar D. Salt E. Baking soda

B. Salad dressing

Which state of matter is characterized by having a definite shape and definite volume? A. Plasma B. Solid C. Gas D. Liquid

B. Solid

Which of the following is a true statement about compounds? A. They have properties similar to those of their constituent elements B. They are pure substances C. They have variable compositions D. They can be physically separated into their constituent elements

B. They are pure substances

Which of following is NOT a quantitative measurement? A. 5 L B. Very small C. 200 mL D. 17 mm E. 10 m

B. Very small

The study of the chemistry of living organisms

Biochemistry

Which of the Group 13 is not a metal? Aluminum, Boron, Gallium, or Indium

Boron

The diameter of a carbon atom is 0.000000000154 m. What is this number expressed in scientific notation? A. 1.54 x 10^12m B. 1.54 x 10^10m C. 1.54 x 10^-10m D. 154. x 10^-12m

C. 1.54 v 10^-10m

What is the result of adding (2.5 x 10^3) + (3.5 x 10^-7)? A. 6.0 x 10^3 B. 2.85 x 10^2 C. 2.85 x 10^3 D. 6.0 x 10^5

C. 2.85 x 10^3

How many significant figures are there in the measurement 40,500g? A. 5 B. 2 C. 3 D. 4 E. The cannot be determined

C. 3

What is the result of multiplying (2.5 x 10^10)x(3.5 x 10^-7)? A. 8.75 x 10^-3 B. 8.75 x 10^2 C. 8.75 x 10^3 D. 8.75 x 10^17

C. 8.75 x 10^3

Which of the following CANNOT be considered a single phase? A. A pure solid B. A pure gas C. A heterogeneous mixture D. A pure liquid E. A homogeneous mixture

C. A heterogeneous mixture

What is the chemical symbol for gold? A. Sn B. Na C. Au D. Ag E. Hg

C. Au

A golf ball has more mass than a tennis ball because it _____. A. Has a definite composition B. Contains different kinds of matter C. Contains more matter D. Takes up more space

C. Contains more matter

What is the chemical symbol for sodium? A. Fe B. Sn C. Na D. Hg E. Ag

C. Na

Previous periods in history were known as the stone age, the iron age, and the bronze age. The modern world is primarily the age of ____. A. Recycling B. Solar power C. Plastics D. Aluminum

C. Plastics

How will the mass of a rusted iron nail compare with the mass of the same nail before it rusted? A. The unrusted nail will have the greater mass B. The two masses will be the same C. The rusted nail will have the greater mass

C. The rusted nail will have the greater mass

What is the formula for calcium fluoride?

CaF2

The non-SI scale for temperature

Celsius temperature scale

Process in which substances are changed into different substances

Chemical Reaction

A characteristic of matter that allows it to change to something new is a...

Chemical property

Composed of two or more substances chemically bound together

Compound

What is the formula for Copper (II) acetate?

Cu(Ch3COO)2

Approximately how many elements exist in nature? A. 10,000 B. 30 C 1,000 D. 100 E. 1,000,000

D. 100

A hypothesis is ______. A. A thoroughly tested model B. A concise statement that summarizes the results of a wide variety of experiments C. An observation recorded from an experiment D. A descriptive model for observations

D. A descriptive model for observations

Physical properties of a substance includes ______. A. Color and odor B. Melting and boiling points C. Density and harness D. All of the above

D. All of the abouve

Which of the following is a homogeneous mixture? A. Beef stew B. Raisin bread C. Sand and water D. Brine E. Soil

D. Brine

Which of the following is a significant contributor to the greenhouse effect? A. Pheromones B. Ozone layer depletion C. Decaying radioactive waste D. Carbon dioxide gas

D. Carbon dioxide gas

Chemistry is chiefly concerned with the study of which of the following types of changes in substances? A. Changes in location B. Changes in volume C. Changes in amount D. Changes in composition E. Changes is shape

D. Changes in composition

All of the following are physical properties of a substance is the liquid state EXCEPT _____. A. Definite mass B. Indefinite shape C. Virtual imcompressibility D. Indefinite volume

D. Indefinite volume

What is the first step of the scientific method? A. Stating a theory B. Reaching a conclusion C. Conduction an experiment D. Making an observation E. Formulation a hypothesis

D. Making an observation

All of the following changes to a metal are physical changes EXCEPT _______. A. Bending B. Polishing C. Cutting D. Rusting E. Melting

D. Rusting

What is the name of the element having the chemical symbol Ag? A. Iron B. Antimony C. Copper D. Silver E. Lead

D. Silver

Which of the following is a chemical property of water as it exists at 4 degrees C? A. Its physical state B. Its color C. Its specific gravity D. The fact that it may decompose into hydrogen and oxygen

D. The fact that it my decompose into hydrogen and oxygen

Which of the following is a true statement about homogeneous mixtures? A. They have compositions that never vary B. They consist of two or more phases C. They can consist only of liquids D. They are known as solutions

D. They are known as solutions

A process in which a liquid is boiled to produce a vapor that is condensed again into a liquid

Distillation

Metals can be used as a wire because they are...

Ductile

What is the mane of the element having the chemical symbol Ca? A. Carbon B. Chromium C. Cadmium D. Chlorine E. Calcium

E. Calcium

What is the chemical symbol for lead? A. Sn B. Ag C. Na D. Fe E. Pb

E. Pb

A substance that cannot be changed into a simpler substance under normal laboratory conditions

Element

Matter with no definite volume and no definite shape is a...

Gas

What is each vertical column of elements in the periodic table called?

Group or Family

Not uniform in composition

Heterogeneous mixture

Of completely uniform compostition

Homogeneous mixture

Atoms of the same element with a different number of neutrons are called a ______.

Isotopes

The SI scale for temperature

Kelvin temperature scale

What is the name for LiCl?

Lithium Chloride

Amount of matter in a substance

Mass

The quantity of matter an object contains

Mass

A physical blend of two or more substances

Mixture

Elements that are gases, are brittle, and are poor conductors at room temperature are...

Nonmetals

The study of all substances containing carbon

Organic chemistry

Burning is not a...

Physical change

Concerned with the theories and experiments that describe chemical behavior

Physical chemistry

Narrowness of range of measurements

Precision

A new substance formed in a chemical reaction

Product

Descriptive and nonnumeric

Qualitative

Definite and usually numeric

Quantitative

Starting substance in a chemical reaction

Reactant

Known or estimated in measurement

Significant figure

______ is another name for a homogeneous mixture.

Solution

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

Temperature

Gas that is normally a liquid or solid at room temperature

Vapor

The force of gravity on an object

Weight

Matter is defined as...

has mass and takes up space