Chem Q3 mastery review

Molecular geometry/ hybrid

100

Give the molecular geometry of CH₄​​​​

Tetrahedral

200

What is the molecular geometry of a compound with five atoms attached to the central atom (and no lone pairs)?

Trigonal bipyramidal

300

What is the molecular geometry of water (H₂O)?

Bent

400

What kind of hybrid orbitals do you get by combining one s orbital with 3 p orbitals? How many of them do you get?

You get a set of four sp³ orbitals

500

What is the molecular geometry of NHO?

Bent

Ionic naming

100

Name the compound KCl

Potassium Chloride

200

What is the formula for Barium Chloride?

BaCl₂

300

What is the name for KNO₃?

Potassium nitrate

400

Write the formula for Tin (IV) Chloride

SnCl₄

500

What is the name for Fe₃(PO₄)₂?

Iron (II) Phosphate

Covalent naming

100

Name SiBr₄

Silicon tetrabromide

200

What is the formula for phosphorus trifluoride?

PF₃

300

What is the formula for Selenium dioxide?

SeO₂

Oxidation numbers

100

If the oxidation number for Fluorine is always -1, what is the oxidation number of carbon in CF₄?

+4

200

Find the oxidation number for the elements in H₂O.

H-- +1, O-- -2

300

Find the oxidation numbers for the elements in PS₂.

P--  +4, S-- -2

400

What is the oxidation number for the elements in NO₃^-?

N--+5, O-- -2

500

Name the compound SF₆ using the stock system of naming. 

Sulfur (VI) Fluoride

Percent comp/formulas

100

What is the difference between an empirical and molecular formula?

Empirical formula--simplest ratio of elements

molecular formula--actual number of elements in a molecule

200

What is the percent composition of a substance made up of 30g Ca and 55g Br?

64.7% Br, 35.3% Ca

300

What is the percent composition of CO₂? 

72.7% O, 27.3% C

400

What is the empirical formula for a compound that is 6.714%H, 40.001%C, and 53.285%O by mass?

CH₂O

500

What is the empirical formula for a compound that is 69.590%Ba, 6.086%C, and 24.323%O?

BaCO₃