Quarter 2 Review

Unit 4

100

What is the special name of Group 2 elements?

Alkaline Earth Metals

200

What ion would francium most likely form?

Fr⁺

300

What happens to the SHIELDING EFFECT as you go down a group on the periodic table?

It INCREASES (more energy levels between the valence electrons and the nucleus)

400

Sort the following elements in order of increasing electronegativity:

Ar, Cl, Na, F

Ar, Na, Cl, F

500

Sort the following atoms/ions in order of decreasing radius:

Se^2-, Kr, As^3-, Sr²⁺​​​​

As^3-, Se^2-, Kr, Sr²⁺

Unit 5

100

What kind of compound is CaF₂?

Ionic

200

Name two typical characteristics of covalent compounds.

soft and flexible

gas at room temperature

does not conduct electricity or heat well

melts at a low temperature

300

Draw the Lewis structure for CO₂.

400

Draw Lewis structures for, and electrons moving between, aluminum and fluorine as they form an ionic compound.

(see board)

500

Draw the Lewis structure for OF₂ and name what geometric shape the molecule would make.

Bent

Unit 6

100

NaBr

sodium bromide

200

P₂O

diphosphorus monoxide

300

HI

hydroiodic acid

400

DAILY DOUBLE

Ru(CO₃)₂

Ruthenium (IV) carbonate

500

Na₂SO₄ x H₂O

Sodium sulfate monohydrate

Grab Bag 1

100

What ion would barium most likely form?

Ba²⁺

200

Which element has a higher ionization energy:

Lead or carbon?

Carbon, C

300

Hydrosulfuric acid

H₂S

400

Give the formula for the compound formed between potassium and tellurium.

K₂Te

500

Chlorous acid

HClO₂

Grab Bag 2

100

What kind of compound is NCl₃?

Covalent

200

Draw the Lewis structure for CH₄.

300

Give the formula for the compound formed from calcium and nitrogen.

Ca₃N₂

400

Platinum (II) oxide

PtO

500

Draw the Lewis structure for CH₂O, formaldehyde, and name the geometric shape it would make.

Trigonal Planar