Chemistry Review

Balancing equations

100

___C + ___S8 -->___CS2

4,1,4

200

___Na + ___O₂ -->___Na₂O

4, 1, 2

300

___K + ___B₂O₃ -->___K₂O +___B

3,1,3,2

400

___KOH + ___HBr -->___KBr + ___H₂O

1,1,1,1

500

___CH₄ + ___O₂ -->___CO₂ + ___H₂O

1, 2,1,2

Moles & Mole Ratios

100

1MnO2 + 1C → 1Mn + 1CO2

 What is the mole ratio of MnO2 to CO2?

1:1

200

How many molecules in 1 mole?

6.02 x 10^23 molecules

300

1Zn + 2 CrCl3 → 2 CrCl2 + 1ZnCl2

 How many moles of CrCl2 would be produced from 2 moles of Zn?

4 moles

400

1FeS(s) + 2 HCl(aq) → 1FeCl2(aq) + 1H2S(g)

How many moles of FeS are required to react with 3 moles of HCl?

2 moles of FeS

500

__Li₂O(s) + ____ H₂O(l) → ____ LiOH(aq)

After you balance the following equation, find the ratio of Li₂O to H₂O

1:1

Chemical Bonding

100

A covalent bond is between _____ and a ______

a nonmetal and a nonmetal

200

An ionic bond is between a ______ and a _______. 

a metal and a nonmetal

300

In an ionic bond, electrons are being _______ and in a covalent electrons are being _______. 

transfered, shared

400

Li₂O is an example of a(n) __________ bond and the name is ___________. 

ionic bond and the name is Lithium Oxide. 

500

Water is an example of a(n) _________ bond and hydrogen _________ electrons with oxygen. 

covalent bond and hydrogen shares electrons with oxygen. 

Thermodyamics

100

What are the 4 states of matter?

liquid, gas, solid, plasma

200

______ is when matter goes from liquid to gas. 

Boiling/evaporation

300

________ is when matter goes from solid to gas like in dry ice. 

Solid to gas

400

What is the boiling point of water in Celsius?

100 C

500

During the phase change of deposition, what state(s) of matter is there?

solid and gas