Question 1

subatomic particle with a positive charge

Accepted Answer

proton

Question 2

subatomic particle with no charge

Accepted Answer

neutron

Question 3

subatomic particle with a negative charge

Accepted Answer

electron

Question 4

Atoms of the same element that have different numbers of neutrons

Accepted Answer

isotope

Question 5

Atoms of the same element that have different numbers of electrons

Accepted Answer

ion

Question 6

releases H+ ions ; pH range 0 to 6

Accepted Answer

acids

Question 7

properties of acids

Accepted Answer

sour and corrosive

Question 8

releases OH- ions ; pH range of 8 to 14

Accepted Answer

bases

Question 9

any substance with a pH of 7

Accepted Answer

neutral

Question 10

SI unit for the amount of substance

Accepted Answer

mole

Question 11

compound with transfer of electrons ; no prefixes for naming

Accepted Answer

ionic compound

Question 12

compound formed by sharing electrons ; uses prefixes to name

Accepted Answer

covalent compound

Question 13

groups that are cations

Accepted Answer

1A, 2A, 3A

Question 14

groups that are anions

Accepted Answer

5A, 6A, 7A

Question 15

an element that has properties of both metals and nonmetals

Accepted Answer

metalloid

Question 16

bases do this to pH paper

Accepted Answer

turns red litmus paper blue

Question 17

acids do this to pH paper

Accepted Answer

turns blue litmus paper red

Question 18

a chemical equation that is NOT balanced

Accepted Answer

skeleton equation

Question 19

Matter is not created nor destroyed in any chemical or physical change ; must be equal before and after

Accepted Answer

law of conservation of mass

Question 20

diagrams showing all electrons

Accepted Answer

Bohr Model / Electron configuration

Question 21

diagram showing only valence electrons

Accepted Answer

Lewis Dot structure

Question 22

states that 8 is the stable number of valence electrons

Accepted Answer

octet rule

Question 23

states that 2 is the stable number of valence electrons

Accepted Answer

duplet rule

Question 24

starting material in a chemical equation

Accepted Answer

reactants

Question 25

Ending materials in a chemical reaction.

Accepted Answer

products

Question 26

speeds up a chemical reaction by lowering activation energy

Accepted Answer

catalyst

Question 27

small numbers written after elements and compounds that are never changed to balance equation

Accepted Answer

subscripts

Question 28

large numbers placed in front to balance equation by multiplying

Accepted Answer

coefficients

Question 29

the fast way of predicting the chemical formula of an ionic compound

Accepted Answer

criss-crossing method

Question 30

properties of bases

Accepted Answer

bitter and slippery

Question 31

decomposition reaction

Accepted Answer

AB --> A + B

Question 32

synthesis reaction

Accepted Answer

A + B --> AB

Question 33

3 things conserved in a chemical reaction

Accepted Answer

total mass, type of atoms , number of atoms

Question 34

the center of the atom which contains the protons and neutrons

Accepted Answer

nucleus

Question 35

a region around the nucleus of an atom where electrons are likely to be found

Accepted Answer

electron cloud

Question 36

tells the number of valence electrons

Accepted Answer

group number

Question 37

indirectly tells the number of ALL electrons

Accepted Answer

atomic number

Question 38

ion with a positive charge

Accepted Answer

cation

Question 39

ion with a negative charge

Accepted Answer

anion

Question 40

chemical bond made by sharing valence electrons

Accepted Answer

covalent bond

Question 41

chemical bond made by the transfer of valence electrons

Accepted Answer

ionic bond

Question 42

chemical formula with the lowest whole-number ratio of elements in a compound

Accepted Answer

empirical formula

Question 43

created the first periodic table

Accepted Answer

Mendeleev

Question 44

having 8 atoms

Accepted Answer

octatomic

Question 45

having 4 atoms

Accepted Answer

tetratomic

Question 46

having 1 atom

Accepted Answer

monatomic

Question 47

list of diatomic elements

Accepted Answer

H , N , O , F , Cl , Br, I

Question 48

is needed to know charge of transition metal elements (d block)

Accepted Answer

roman numerals

Question 49

list of sublevels / blocks

Accepted Answer

s , p , d , f

Question 50

naming of covalent compounds

Accepted Answer

use prefixes

Question 51

naming of ionic compounds

Accepted Answer

no prefixes

Question 52

solid made from mixing 2 liquids together

Accepted Answer

precipitate

Question 53

elements that RARELY participate in chemical compounds (already stable)

Accepted Answer

Noble Gases

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