The atomic mass of the elements

increases as you move left to right and top to bottom on the Per. Table

Wo has greatest

atomic mass, Bo the least

Bo, Wo, J, L

Noble gases are in group

18

They are noble gases

Bo, Wo, J, L

What did you learn ?Clue

Alien Element

-Atoms can gain or lose electrons

-The # of electrons an atom will gain, lose or share is determined by the group that it is in.

Non-metals who typically gain or share one electron

A, V, Kt

Reactivity decreases as

you move from left to right on the Per. Table

They are the most reactive

groupX, By, Ch, Q

What did you learn ?Clue

Alien Element

The number of protons is equal to the

atomic #

T has more protons than

HiT

Metalloids are located between

the metals and the non-metals along

the zigzag line.

They are metalloids

E, Hi, T, Ss

What did you learn ?Clue

Alien Element

Table salt is made of NaCl

Kt and By make table

saltKt and By

The atomic mass (lightness or

heaviness) increases as you move left to right and down the

periodic table

Pf is the lightest

element, El is the heaviest

Pf, El

What did you learn ?Clue

Alien Element

Carbon is important in the chemistry

of life

Fx is important in the chemistry

of life

Fx

The number of protons is equal

to the atomic number on the periodic table

Do has 4 protons

Do

What did you learn ?Clue

Alien Element

As you move across the periodic table from left to right,

the number of electrons increases

in each period

G has less electrons than M

M, G, Ss

The further to the right you move on the periodic table, the less reactive the element is

R is less reactive than

DoR, Do

What did you learn ?Clue

Alien Element

Diatomic = 2 atoms hanging out together.

Oxygen hangs our as O2

It’s a diatomic molecule

Nu

Elements on the right side of the periodic table gain electrons (except for the

noble gases)

They all gain 2 electrons

Up, Oz, Nu

What did you learn ?Clue

Alien Element

Atoms on the left side of the periodic table

tend to lose electrons

They lose 2 electrons

Z, Pi

The number of electrons =

the atomic number

An has 49 electrons

An

What did you learn ?Clue

Alien Element

Mg is used in flashbulbs

Z is used in flash bulbs

Z

What did you learn ?Clue

Alien Element