3rd Monthly Test

Question 1

Solid

Answer 1

Has definite shape and volume

Question 2

Liquid

Answer 2

Changes shape depending on container, definite volume

Question 3

Gas

Answer 3

No definite shape and volume

Question 4

Plasma

Answer 4

No definite shape and volume

Question 5

Liquid to Solid

Answer 5

Freezing

Question 6

Solid to Liquid

Answer 6

Melting

Question 7

Liquid to Gas

Answer 7

Vaporization

Question 8

Gas to Liquid

Answer 8

Condensation

Question 9

Solid to Gas

Answer 9

Sublimation

Question 9

Gas to Solid

Answer 9

Deposition

Question 10

Releasing Thermal Energy

Answer 10

Deposition, Condensation, Freezing

Question 11

Absorbing Thermal Energy

Answer 11

Sublimation, Melting, Vaporization

Question 12

the amount of matter in an object.

Answer 12

Mass

Question 13

anything that occupies space and has mass.

Answer 13

Matter

Question 14

the space occupied by an object.

Answer 14

Volume

Question 14

measurement of how tightly a material is packed together.

Answer 14

Density

Question 15

is a representation of what an atom could look like based on observations and scientific evidence.

Answer 15

Atomic Model

Question 16

is considered the smallest particle of matter.

Answer 16

Atom

Question 17

“Atomos” greek word meaning “uncut”

Answer 17

Democritus

Question 18

substances that are made up of only one kind of particle and has a fixed or constant structure.

Answer 18

Pure substance

Question 19

2 types of Pure substance

Answer 19

Element and Compound

Question 20

substance that consists of only one type or kind of atom.

Answer 20

Element

Question 21

substance when two or more elements are combined chemically in a fixed ratio.

Answer 21

Compound

Question 22

made up of two or more substances that are not chemically combined.

Answer 22

Mixtures

Question 23

2 types of mixture

Answer 23

Homogeneous and Heterogeneous

Question 24

has a uniform composition, you cannot identify the ingredients.

Answer 24

Homogenous

Question 25

does not have a uniform composition, you can identify the ingredients.

Answer 25

Heterogenous

Question 26

Asian greek philosopher

Answer 26

Democritus

Question 27

Matter is infinitely divisible. He disagreed with Democritus

Answer 27

Aristotle

Question 28

believed that matter was made up of four natural elements.

Answer 28

Aristotle

Question 28

Billiard Ball Model

Answer 28

John Dalton

Question 29

Plum Pudding Model

Answer 29

J.J Thompson (Joseph John THompson)

Question 29

Father of nuclear physics

Answer 29

Ernest Rutherford

Question 30

Nuclear Model

Answer 30

Ernest Rutherford

Question 31

Planetary Model

Answer 31

Niels Bohr

Question 32

was discovered through his experiments on Beryllium known as Neutrons.

Answer 32

James Chadwick

Question 33

Neutron Model

Answer 33

James Chadwick

Question 34

a tiny subatomic particle with a negative charge

Answer 34

Electron (e-)

Question 35

the region where relatively massive protons and neutrons are collected in the center of an atom

Answer 35

Nucleus

Question 35

a more massive (but still tiny) subatomic particle with a positive charge

Answer 35

Proton (p+)

Question 36

a subatomic particle with about the same mass as a proton but no charge

Answer 36

Neutron (n0)

Question 37

The sum of the number of protons and neutrons in the nucleus

Answer 37

Mass Number (A)

Question 38

the number of protons in the nucleus of an atom

Answer 38

Atomic Number (Z)

Question 39

Is equal to the atomic number

Answer 39

Number of p+ and e-

Question 40

what is the formula if neutron is unknown?

Answer 40

Mass Number (A) - Proton (p+)

Question 41

what is the formula if mass number is unknown?

Answer 41

Atomic Number (Z) + Neutron (n0)

Question 42

Symbol for atomic number?

Answer 42

Z

Question 43

Symbol for mass number?

Answer 43

A

Question 44

Dry ice

Answer 44

Sublimation

Question 45

Frost

Answer 45

Deposition

Question 46

Drying of wet hair

Answer 46

Evaporation

Question 47

Clouds

Answer 47

Condensation

Question 48

Ice to water

Answer 48

Melting

Question 49

Water turning to ice

Answer 49

Freezing