Chemistry

Question 1

chemistry

Answer 1

is the study of the structure, properties, composition, mechanisms, and reactions of organic compounds.

Question 2

matter

Answer 2

physical substance in general

Question 3

Extensive Property

Answer 3

Mass and volume

Question 4

Intensive Property

Answer 4

the amount of material in the system.

Question 5

Mass

Answer 5

a measure of the amount of matter in an object

Question 6

Volume

Answer 6

the quantity of three-dimensional space occupied by a liquid, solid, or gas.

Question 7

Physical Properties

Answer 7

used to observe and describe matter

Question 8

Physical Change

Answer 8

any change in matter that involves the substance going from one physical state to another.

Question 9

Chemical Property

Answer 9

s any of a material’s properties that becomes evident during, or after

Question 10

Chemical Change

Answer 10

occur when a substance combines with another to form a new substance

Question 11

Phase (Phase of Matter)

Answer 11

The states in which matter can exist: as a solid, liquid, or gas.

Question 12

Solid

Answer 12

firm and stable in shape; not liquid or fluid.

Question 13

Liquid

Answer 13

a substance that flows freely but is of constant volume, having a consistency like that of water or oil.

Question 14

Gas

Answer 14

an airlike fluid substance which expands freely to fill any space available, irrespective of its quantity.

Question 15

Freezing

Answer 15

The process through which a substance changes from a liquid to a solid.

Question 16

Melting

Answer 16

or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid.

Question 17

Vaporization

Answer 17

of an element or compound is a phase transition from the liquid phase to vapor.

Question 18

Element

Answer 18

A substance that cannot be broken down into simpler substances by chemical means.

Question 19

Chemical Symbol

Answer 19

an abbreviation or short representation of a chemical element; the symbols in the periodic table.

Question 20

Consendation

Answer 20

is the process of a substance in a gaseous state transforming into a liquid state.

Question 21

Sublimation

Answer 21

is a type of phase transition, or a change in a state of matter, just like melting, freezing, and evaporation.

Question 22

Deposition

Answer 22

The direct solidification of a vapor by cooling; the reverse of sublimation.

Question 23

Substance

Answer 23

matter which has a specific composition and specific properties.

Question 24

Compound

Answer 24

substance formed when two or more chemical elements are chemically bonded together.

Question 25

Mixture

Answer 25

Any substance that has a uniform and unchanging composition is considered to be pure.

Question 26

Homogeneous Mixture

Answer 26

refers to substances and mixtures which are in a single phase, such as air

Question 27

Heterogeneous Mixture

Answer 27

any combination of substances that does not have uniform composition and properties; a mixture of physically distinct substances with different properties

Question 28

Solution

Answer 28

the process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change.

Question 29

Filtration

Answer 29

any of various mechanical, physical or biological operations that separate solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

Question 30

Distillation

Answer 30

the separating of the constituents of a liquid by boiling it and then condensing the vapor that results.

Question 31

Chemical Reaction

Answer 31

a process in which one or more substances, the reactants, are converted to one or more different substances, the products.

Question 32

Reactant

Answer 32

substance that takes part in and undergoes change during a reaction

Question 33

Product

Answer 33

reactants are transformed into products after passing through a high energy transition state.

Question 34

Precipitate

Answer 34

cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.

Question 35

Law of Conservation of Mass

Answer 35

states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.