Physical Science

Lewis Dot Diagrams

100

What do the dots in Lewis Dot Diagrams represent?

valence electrons

200

How many valence electrons does Oxygen have?

6

300

Draw the Lewis Dot Diagram for carbon.

(4 ve-)

400

Create the Lewis Dot Diagram for a molecule of water (H2O)

H - 1 valence electron x 2 atoms = 2 valence electrons

O - 6 valence electrons x 1 atom = 6 valence electrons

500

Create the Lewis Dot Diagram for LiCl (Lithium & Chlorine).

Ionic Bond

Li - 1 valence electron

Cl - 7 valence electrons

Li (+1) [Cl] (-1)

Covalent Bonds

100

Covalent bonds form between ____________ and ____________. 

nonmetals & nonmetals

200

In a covalent bond, valence electrons are ____________ between two atoms. 

shared

300

List 2 molecules that could form a covalent bond. 

2 nonmetals, both molecules have full outer energy levels when combined

400

Create a Lewis Dot Diagram for HCl (Hydrogen & Chlorine). 

H - 1 ve-

Cl - 7 ve-

500

Create a Lewis Dot Diagram for NH₃.

N: 5 valence electrons x 1 atom = 5 valence electrons

H: 1 valence electron x 3 atoms = 3 valence electrons

Ionic Bonds

100

Ionic Bonds form between ________ and _________. 

metals & nonmetals

200

In an ionic bond, valence electrons are _______________ to an atom from another atom. 

donated or given

300

List 2 molecules that could form an ionic bond. 

1 metal, 1 nonmetal, both molecules have full outer energy levels when one donates to the other

400

Create a Lewis Dot Diagram for MgS.

Mg - 2 valence electrons

S - 6 valence electrons

Mg (+2) [S] (-2)

500

Create a Lewis Dot Diagram for MgI₂.

Mg - 2 valence electrons

I - 7 valence electrons

[I] (-1) Mg (+2) [I] (-1)

Calculate Subatomic Particles

100

How many protons are in a carbon atom?

6

200

What is the formula to calculate the number of neutrons in an atom?

neutrons = mass - protons

mass = protons + neutrons

300

If an atom has 12 protons & 12 neutrons, what is its atomic mass?

24

400

If an element has an atomic number of 26, how many neutrons does it have if its atomic mass is 56?

30 neutrons

500

How many electrons are in an atom with 12 protons and a charge of -2?

14 electrons

Periodic Table

100

Metals are found mostly to the (left or right) of the periodic table. 

left

200

Nitrogen, Chlorine, Helium, Hydrogen, & Iodine are all examples of this type of element found mostly on the right side of the periodic table.

non-metals

300

The atomic number of an element is how many ________ are in the nucleus. 

protons

400

Are metals or non-metals better conductors of electricity?

metals

500

The columns of the periodic table are called ______(1)_____. 

The rows of the periodic table are called _____(2)_____. 

1) groups

2) periods