Chemistry

Question 1

All matter is made up of atoms

“ Billiard ball model”

Answer 1

Dalton

Question 2

Atoms consists of a large number of electrons held together by a mass of an equal number of positive and negative charges of electrons.
“ plum pudding/ raisin bun model”

Answer 2

Thomson

Question 3

Atoms have a small charged nucleus surrounded by largely empty space.
“ Solar System model”

Answer 3

Rutherford

Question 4

Electrons orbit around the nucleus.

“ — Model of atom”

Answer 4

Bohr

Question 5

Model of matter used today.

Answer 5

Quantum model of matter

Question 6

Can be broken down by physical means.

Answer 6

Mixture

Question 7

Visible substances.

“ mechanical mixture “

Answer 7

Heterogenous

Question 8

Cannot see different substances.

“ solution “

Answer 8

Homogeneous

Question 9

Cannot be separated by physically means.

Answer 9

Pure substance

Question 10

Cannot be broken down

Answer 10

Element

Question 11

2 or more elements in a specific ratio

Answer 11

Compound

Question 12

= # of protons in the nucleus

Answer 12

Atomic #

Question 13

of protons and neutrons in the nucleus

Answer 13

Mass number

Question 14

Shiny, Malleable, Conductors

Answer 14

Metals

Question 15

Brittle, Non Conductors

Answer 15

Non Metals

Question 16

Properties of both metal and non metal

Answer 16

Metalloids

Question 17

Positive charge

Answer 17

Cations

Question 18

Negative Charge

Answer 18

Anions

Question 19

Bond where cations and anions are together

Answer 19

Atomic Bond

Question 20

Formula of Neutrons

Answer 20

Atomic mass - protons

Question 21

Formula for mass #

Answer 21

Protons + neutrons

Question 22

Atoms are neutral, Why?

Answer 22

Protons and electrons cancel each other out

Question 23

WHMIS

Answer 23

Workplace Hazardous Materials Information System

Question 24

Properties of matter

Answer 24

Physical, Chemical

Question 25

Energy levels

Answer 25

Level 1 = 2 max
level 2 = 8 max
level 3 = 8 max

Question 26

How to identify how many valence electrons there are?

Answer 26

Group # = Valence Electrons

Question 27

Metal + Non metal

Answer 27

Ionic

Question 28

2 or more non metals

Answer 28

molecular

Question 29

Properties of ionic

Answer 29

Hard and brittle, form crystals, high melting points, Conducts electricity

Question 30

metal ion has 2 or more charges

Answer 30

Multivalent ionic compound

Question 31

properties of molecular compounds

Answer 31

soft, low melting point, does not conduct electricity

Question 32

Different elements act as a single ion

Answer 32

Polyatomic ionic

Question 33

mono

Answer 33

1

Question 34

di

Answer 34

2

Question 35

tri

Answer 35

3

Question 36

tetra

Answer 36

4

Question 37

penta

Answer 37

5

Question 38

hexa

Answer 38

6

Question 39

hepta

Answer 39

7

Question 40

octa

Answer 40

8

Question 41

nona

Answer 41

9

Question 42

deca

Answer 42

10

Question 43

Sour, react with some metals, blue litmus to red, neutralize bases, conducts electricity

Answer 43

acids

Question 44

IUPAC

ide

Answer 44

ic acid

Question 45

IUPAC

ate

Answer 45

ic acid

Question 46

IUPAC

ite

Answer 46

ous acid

Question 47

Bitter, slippery, Red litmus to blue, neutralize acids, conducts electricity

Answer 47

bases

Question 48

absorbing energy

Answer 48

endothermic

Question 49

releasing energy

Answer 49

exothermic

Question 50

reactions in living things

Answer 50

biochemical reactions

Question 51

two substances form into one

Answer 51

Formation

Question 52

breaking down

Answer 52

decomposition

Question 53

Any reaction with oxygen

Answer 53

combustion

Question 54

a + Bc = b + ac

Answer 54

single replacement

Question 55

AB + CD = AD + CB

Answer 55

double replacement