Question 1

Which of following would be classified as a chemical change?
A) the transformation of solid carbon dioxide into gaseous carbon dioxide
B) the freezing of diesel fuel
C) the condensation of nitrogen gas
D) the removal of a color stain using bleach
E) the evaporation of water

Accepted Answer

The removal of a color stain using bleach involves a chemical reaction where the bleach reacts with the molecules of the stain, altering their structure and effectively removing the color. This is a chemical change because it results in the formation of new substances.

Question 2

Which of the following is an example of qualitative information about a substance?
A) Color of the substance
B) Melting temperature of the substance
C) Mass of the substance
D) Volume of the substance
E) Boiling temperature of the substance

Accepted Answer

Qualitative information is descriptive in nature, and relates to the properties or characteristics of a substance. The color of a substance is an example of a qualitative characteristic, as it describes the appearance of the substance rather than a specific numerical value like the melting or boiling temperature, mass or volume.

Question 3

A(n)________ is the smallest particle of an element that retains the characteristic chemical properties of that element.

Accepted Answer

The answer of A(n)________ is the smallest particle of an...

Question 4

An intensive property of a substance is
A) independent of the amount present.
B) dependent on its volume,but not its mass.
C) not affected by its temperature.
D) dependent only on its temperature.
E) dependent only on its mass and volume.

Accepted Answer

Intensive properties are those that do not depend on the amount of the substance present. Examples include density, boiling point, and color.

Question 5

A battery-operated power tool,such as a cordless drill,converts
A) electrostatic energy to chemical potential energy.
B) mechanical energy to electrostatic energy.
C) thermal energy to mechanical energy.
D) thermal energy to gravitational energy.
E) chemical potential energy to mechanical energy.

Accepted Answer

A battery-operated power tool, such as a cordless drill, converts chemical potential energy stored in the battery to mechanical energy to power the tool.

Question 6

Substances like hydrogen (H₂)and oxygen (O₂)that are composed of only one type of atom are classified as ________.

Accepted Answer

The answer of Substances like hydrogen (H₂)and oxygen (O₂)that are...

Question 7

Which of the following are extensive properties: mass,volume,and/or density?
A) mass only
B) volume only
C) density only
D) mass and volume
E) volume and density

Accepted Answer

Mass and volume are both extensive properties, as they depend on the amount of matter present. Density, however, is an intensive property, as it remains the same regardless of the amount of matter present.

Question 8

Properties,such as color and density,which can be observed or measured without changing the composition of a substance are called ________ properties.

Accepted Answer

The answer of Properties,such as color and density,which can be...

Question 9

A mass of 10 g of table salt dissolves in water to form a(n)________ mixture (i.e.,a mixture that is uniform throughout).

Accepted Answer

The answer of A mass of 10 g of table...

Question 10

Potential energy possessed by water at the top of a waterfall is known as ________ energy.

Accepted Answer

The answer of Potential energy possessed by water at the...

Question 11

To ensure integrity in science,experimental results should be ________ and reported in sufficient detail that the experiment can be repeated by others.

Accepted Answer

The answer of To ensure integrity in science,experimental results should...

Question 12

The ________ of a substance is defined as its mass per unit volume.

Accepted Answer

The answer of The ________ of a substance is defined...

Question 13

________ energy is the energy associated with the separation of two electrical charges.

Accepted Answer

The answer of ________ energy is the energy associated with...

Question 14

Density is an example of a(n)_____ property and does not depend on the amount of a substance.

Accepted Answer

The answer of Density is an example of a(n)_____ property...

Question 15

Which of the following statements is true of a chemical equation?
A) It is a representation of only a physical change rather than a chemical or molecular change.
B) It shows that the reactants on the left side of an equation produce the products on the right side of the equation.
C) The number of atoms found in the reactants doubles in the products.
D) The number of atoms found in the reactants halves in the products.
E) The identity of the substance in a chemical equation is preserved.

Accepted Answer

A chemical equation shows the reactants on the left side of the equation producing the products on the right side of the equation. It represents a chemical change, not just a physical change, and the number and identity of the atoms are conserved in the reaction.

Question 16

What kind of change is depicted below?   
A) no change
B) chemical change
C) both chemical and physical change
D) physical change

Accepted Answer

The answer of What kind of change is depicted below?...

Question 17

Many regulators,environmentalists,and citizens around the world believe that ________ development is required to meet today's economic and environmental needs while preserving the options for future generations to meet theirs.

Accepted Answer

The answer of Many regulators,environmentalists,and citizens around the world believe...

Question 18

Which of the following lists contains only forms of kinetic energy?
A) electrostatic,gravitational,and mechanical energy
B) gravitational,mechanical,and electrical energy
C) thermal,acoustic,and mechanical energy
D) chemical,thermal,and acoustic energy
E) gravitational,chemical,and electrostatic energy

Accepted Answer

Thermal, acoustic, and mechanical energy are all forms of kinetic energy. Thermal energy is the movement of particles within an object, acoustic energy is the energy carried by sound waves, and mechanical energy involves the movement of objects or substances, such as in motion or vibration.

Question 19

All of the following are examples of intensive properties of matter except _____.
A) boiling point
B) thermal conductivity
C) malleability
D) the amount of energy transferred as heat
E) color

Accepted Answer

Intensive properties are those that do not depend on the amount of matter present. Boiling point, thermal conductivity, malleability, and color are all examples of intensive properties because they do not change regardless of how much of a substance you have. The amount of energy transferred as heat, however, is an extensive property because it depends on the quantity of the substance.

Question 20

The law of ________ states that the total energy of the universe is constant.

Accepted Answer

The answer of The law of ________ states that the...

Quiz 1: Basic Concepts of Chemistry

Which of following would be classified as a chemical change?

Which of the following is an example of qualitative information about a substance?

A(n)________ is the smallest particle of an element that retains the characteristic chemical properties of that element.

An intensive property of a substance is

A battery-operated power tool,such as a cordless drill,converts

Substances like hydrogen (H2)and oxygen (O2)that are composed of only one type of atom are classified as ________.

Which of the following are extensive properties: mass,volume,and/or density?