Chemistry 2

Chemical Names

100

What is the name for the following binary ionic compound: 

Na₂S

Sodium Sulfide

200

Name the following binary molecular compound: ICl₃

Iodine Trichloride

300

What is the chemical name for Cu₂Se

copper(I) selenide

400

What is the chemical same for SiO₂

Silicon dioxide

500

Give the name for the following chemical formula: Ca(OH)₂

calcium hydroxide

Chemical Formulas

100

Write the formula for the following binary ionic compound: 

potassium and iodine

KI

200

What is the formula for phosphorus trichloride

PCl₃

300

Write the chemical formula for lithium nitrate

LiNO₃

400

What is the chemical formula for lead(IV) oxide 

PbO₂

500

Write the chemical formula for chloric acid

HClO₃

Oxidation Numbers

100

What is the charge of O in O₂

0

200

What is the charge of Cl in Cl₂O

+1

300

What is the charge of C in CO₃^-2

+4

400

What is the charge of O in OF₂

+2

500

What is the charge of Cl in Ca(ClO₄)₂

+7

Conversions

100

To convert from grams to moles/ moles to gram you must use

Molar Mass

200

To find the number of molecules from moles you must use 

Avogadro's number

300

How many grams are in 2 moles of Al?

53.964 g Al

400

What is the molar mass of C₁₃H₁₈O₂? 

206.3 g/mol C₁₃H₁₈O₂

500

How many molecules are in 125 g of sugar, C₁₂H₂₂O₁₁ ?

2.20 × 10 23 molecules C₁₂H₂₂O₁₁ 

Vocab + Percent Composition

100

____________ indicate the general distribution of electrons among the bonded atoms in a molecular compound or a polyatomic ion.

Oxidation State/ Oxidation #/ Charge

200

___________ is any compound that is composed of exactly two elements. 

binary compound

300

_____________ is the sum of the average atomic masses of the atoms represented in its formula.

formula mass

400

What is the formula for percent composition?

(mass of element in sample) / (mass of sample) x 100

500

Find the percent composition for Na in NaHSO₄?

19.15%