Chemistry-Families Of Elements-9Th Grade

Front 1

Alkali Metals

Back 1

Group IA
1. Each has 1 e-
2.Shiny Metals-soft, malleable, ductile
3 React very easily with air- tarnish quickly
4. React violently with water
5. Good Conductors of electriciy and heat.

Front 2

Alkaline Earth Metals

Back 2

Group IIA
1. Each has 2 e-
2. Very similar to alkali metals(IA) only these metals do not react as violently with air and water.
3. Not found in the free state in nature (compound
4. Usually form (2+) ions.

Front 3

Transition Elements

Back 3

IIIB-IIB
1. Transition elements are metals.
2. Good conductors of heat and electricity
3.Metals have 1,2, or 3 e-
4. Precious metals Au, Ag and Pt are scarce, unreactive, and soft.
5. Hg is the only metal that is a liquid at room Temperature.

Front 4

Boron Family

Back 4

Group III A
1.Each member has 3e- on the outer shell
2. Boron is a metalloid
3. Al, Ga, In, and Ti are metals
4. Usually form(3+) ions.

Front 5

Carbon Family

Back 5

Group IV A
1.Each member has 4e- on the outer shell
2.C is a non-metal and usually forms covalent bonds
3.Si and Ge are metalloids
4.Sn andPb are metals.

Front 6

Nitrogen Famil

Back 6

Group V A
1.Each has 5e-
2. Not very reactive
3. Usually bond covalently

Front 7

Oxygen Family

Back 7

Group VI A
1. Each has 6e-
2. Found in nature in a free state and chemically combined.
3. Usually bond covalently

Front 8

Halogen Family

Back 8

Group VII A
1.Each has 7e-
2. Halogen elements combine with metals to form salt.
3. Usually form ionic bonds-can form covalent bonds because halogens exist as diatomic molecules.
4. All halogens are poisonous and burn the skin.

Front 9

Noble or Inert gases

Back 9

Group VIII A
1. Each has 8e-/Full outer shell.
2.Very Stable
3. Not very reactive

Front 10

What is the charge of a neutral atom?

Back 10

no charge

Front 11

The number which determines which element you have is

Back 11

atomic number

Front 12

Horizontal rows on periodic chart

Back 12

Periods

Front 13

Atoms which lose electrons to other atoms are

Back 13

positive ions

Front 14

Neon

Back 14

an inert element

Front 15

O

Back 15

molecule of an element

Front 16

O Br Cl

Back 16

diatomic molecules

Front 17

smallest part of an element that still has the properties of the last element

Back 17

atom

Front 18

CO

Back 18

molecule compound

Front 19

ionic bond is formed from

Back 19

the attraction between oppositely charged atoms

Front 20

atomic mass

Back 20

protons +neutrons

Front 21

atomic mass of a neutron

Back 21

1 a.m.u.

Front 22

atomic mass of mercury

Back 22

201

Front 23

The groups/families of elements in the periodic table have

Back 23

the same number of electrons in their outer shell

Front 24

covalent bond

Back 24

a bond formed from the sharing of electrons between atoms

Front 25

Electronegativity is

Back 25

how strongly an atom is attracted to other electrons

Front 26

The octet rules says

Back 26

all elements are more stable with 8 electrons in their outer shell with the exception of hydrogen and helium

Front 27

formula for Clacium bromide

Back 27

CaBr2

Front 28

KCl

Back 28

potassium chloride

Front 29

electrons in the outermost shell of an atom

Back 29

valence electrons

Front 30

substances you begin with in a chemical reaction

Back 30

reactants

Front 31

when a chemical reation is occurring

Back 31

there are bubles, change in color, temp. change, and a precipitate forms

Front 32

when the number of electrons change in an element you have an

Back 32

ion

Front 33

valence electrons are important because

Back 33

they participate in bonding with other atoms

Front 34

the average of the mass numbers of an elements isotopes

Back 34

atomic mass