EXAM 2 REVIEW

definitions

100

Covalent bonds

what are 

Two atoms share some of their electrons 

• Nonmetal + nonmetal  ?

200

Molecular Formula

What is... Gives that actual number of atoms of each element in a molecule of a compound?

300

Molecular Element

what are Elements whose particles are multi-atom molecules?

400

Ionic Compounds

Compounds whose particles are cations and anions

500

Emperical Formula 

Gives the relative amount of atoms of each element in a compound

naming

100

the name of AgCN

what is silver cyanide?

200

Fe(NO₃)₃

what is iron (III) nitrate?

300

Write the formula for hydrobromic acid?

HBR

400

the name of Cu(ClO₃)₂

what is copper (II) chlorate?

500

Write the formula for Nitrous Acid

what is HNO₂ ?

composition of compounds

100

Mass percent of Carbon in CH₄

what is 

200

mass (in grams) of Sodium in 8.5 g of NaCal

what is 3.3g Na?

300

the mass (in g) of 2.8x10²² H₂O molecules

what is 0.84g?

400

how many flourine atoms are present in 5.85g of C₂F₄?

1.41x10²³ atoms

500

the mass percent of Cl in C₂Cl₄F₂

what is 69.58%

balancing equations

100

_Xe + _F₂ ---> _XeF₂

What is Xe + 3F2 ---> XeF₆ 

200

_H₂SO₄ + _Pb(OH)₄ ---> _Pb(SO₄)₂ + _H₂O

2H₂SO₄ + Pb(OH)₄ ---> Pb(SO₄)₂ + 4H₂O

300

CH₄ + O₂ ---> CO₂ + H₂O

CH₄ + 2O₂ ---> CO₂ + 2H₂O

400

_NH₄NO₃ ---> _N₂ + _O₂ + _H₂O

2NH₄NO₃ ---> 2N₂ + O₂ + 4H₂O

500

BF₃ + Li₂SO₃ ---> B₂(SO₃)₃ + LiF

2BF₃ + 3Li₂SO₃ ---> B₂(SO₃)₃ + 6LiF