What is Chemistry?

Question 1

Chemistry

Answer 1

the study of matter and the change it undergoes

Question 2

Matter

Answer 2

physical substance - anything that has mass and takes up space

Question 3

Mass

Answer 3

a measurement that reflects the amount of matter

Question 4

Pure substance

Answer 4

a chemical - matter that has a definite and uniform composition

Question 5

mixture

Answer 5

substance made by mixing other substances together

Question 6

properties

Answer 6

quality of a thing- physical/chemical

Question 7

physical property

Answer 7

matter not involving in its manifestation a chemical change

Question 8

Chemical property

Answer 8

characteristic of a particular substance that can be observed in a chemical reaction

Question 9

Density

Answer 9

a physical property of matter and is defined as the amount of mass per unit volume

Question 10

Physical Change

Answer 10

reversible change in a physical property

Question 11

Chemical Change

Answer 11

one chemical substance is transformed into one or more different substances

Question 12

Homogeneous Mixture

Answer 12

a mixture in which the composition is uniform throughout the mixture uniform composition

Question 13

Heterogeneous Mixture

Answer 13

a mixture in which the composition is not uniform throughout the mixture- individual substance

Question 14

Solution

Answer 14

a thing said, written, or done to deal with or as a reaction to a question, statement or situation

Question 15

Solvent

Answer 15

able to dissolve in substances

Question 16

Solute

Answer 16

the minor component in a solution

Question 17

alloys

Answer 17

metallic substance composed of two or more elements as either a compound or a solution

Question 18

elements

Answer 18

any substance that cannot be decomposed into simpler substances by an ordinary chemical process

Question 19

chemical symbol

Answer 19

a notation of one or two letters representing a chemical element

Question 20

atom

Answer 20

a particle of matter that uniquely defines a chemical element

Question 21

molecule

Answer 21

a group of atoms bonded together

Question 22

bond

Answer 22

link between atoms in molecules or compounds

Question 23

compound

Answer 23

any substance composed of identical molecules consisting of atoms of two or more chemical elements

Question 24

chemical formula

Answer 24

a notation used by scientist to show the number and type of atoms in a molecule