Bell Work Write down these equations, then answer the following:

__BiCl5 + __Zn __ZnCl2 + __Bi and

__Mg(NO3)2 + __Na2SO4 __NaNO3 + __MgSO4

1)What coefficients are needed to balance the equations?

2)What type of reaction are they (decomp, synth., combustion, S.R., D.R., or neutralization)?

3)Would these reactions occur?

4)Assign oxidation numbers to each compound/element and determine if it is a redox reaction. If so, what was reduced, what was oxidized, what was the reducing agent and what was the oxidizing agent?

Questions?

Reality Check• Determine the Oxidation number for each

atom in the following:

Fe2O3 H2 Zn+2

Na2O CO3-2 H2Cr2O7

• Prove that the following is a redox reaction by determining the oxidation numbers of each atom. Then identify the reducing agent and oxidizing agent.

Cu + 2Ag+ Cu+2 + 2Ag

Choose Your CategoryWill It

HappenOxidation Numbers

Redox Reactions

Balancing Chemical Reactions

Reaction Types

Note Type Questions

100 100 100 100 100 100

200 200 200 200 200 200

300 300 300 300 300 300

400 400 400 400 400 400

500 500 500 500 500 500

Final Question

Random Points

400 points

Will It Happen - 100

This can be used to determine if a single replacement reaction can occur.

Back

The Answer is an activity series

Will It Happen - 200

• Will the following reaction occur?

AlO + Fe

Back

The Answer is no because Fe is lower than Al

Will It Happen - 300

• Will the following reaction occur?

Zn + CuSO4

Back

The Answer is yes because Zn is higher than Cu

Random Points

200 points

Will It Happen - 400

• Will the following reaction occur?

AgNO3 + (NH4)2SO4

Back

The Answer is no

Because product would be Ag2SO4 (aq) and NH4NO3 (aq)

Will It Happen - 500

Will the following reaction occur?

• Na2CO3 + BaCl2

Back

The Answer is yes because BaCO3 would be a solid.

Oxidation Numbers - 100

• The oxidation number of a monatomic ion is equal to _____________________

The Answer is the charge of the ion. Back

Oxidation Numbers - 200

• What is the oxidation number of Cu.

The Answer is 0.Back

Random Points

200 points

Oxidation Numbers - 300

• The most electronegative element on the periodic table has an oxidation number of ______________ when in a compound.

The Answer is -1.Back

Oxidation Numbers - 400

• Assign oxidation numbers to all the atoms in the following:

• HOCl

The Answer is +1/-2/+1.Back

Oxidation Numbers - 500

• Assign oxidation numbers to all the atoms in the following:

• AlNO3

The Answer is +3/+3/-2.Back

Redox Reactions – 100

• Any chemical change in which one species loses electrons and another species gains electrons is known as this.

Back

The Answer is a reduction – oxidation reaction or a redox reaction.

Random Points

300 points

Redox Reactions– 200

• This is defined as a chemical change in which electrons are gained, either by the removal of oxygen, the addition of hydrogen, or the addition of electrons.

Back

The Answer is reduction.

Redox Reactions – 300

• What element was reduced in the following reaction?

• 2 HCl + Mg MgCl2 + H2

Back

The Answer is H (it went from a +1 to a 0).

Daily Double

Redox Reactions – 400

• 2Br -1 + H2O2 + 2H3O+ --> Br2 + 4H2O

• What element was reduced?

• What element was oxidized?

• What is the Reducing Agent?

• What is the Oxidizing Agent?

Back

Oxygen

Bromine

Br -1

H2O2

(peroxide)

-1 +1-1 +1-2 0 +1 -2

Redox Reactions – 500

What is the reducing agent in the following reaction?

HNO3 + HBr NO + Br2 + H2O

Back

The Answer is HBr

+1+5-2 +1-1 +2-2 0 +1-2

Balancing Chemical Reactions - 100

• These are the only thing that can be used to balance chemical equations.

Back

The Answer is coefficients

Balancing Chemical Reactions - 200

• Balance the following equation:

___ CaCO3(s)  ___ CaO(s) + ___ CO2(g)

Back

The Answer is 1,1,1

Random Points

500 points

Balancing Chemical Reactions - 300

• Balance the following equation:

__ CaH2 + __ H2O __ Ca(OH)2 + __ H2

Back

The Answer is 1,2,1,2

Balancing Chemical Reactions - 400

AlCl3(aq) + Ba(OH)2(aq) --> Al(OH)3(s) + BaCl2(aq)

When this equation is correctly balanced, the coefficient of the AlCl3 will be —

Back

The Answer is 2

Balancing Chemical Reactions - 500

• Balance the following equation:

__ C6H14 + __ O2 __ CO2 + __ H2O

Back

The Answer is 2, 19, 12, 14

Reaction Types - 100

• This type of reaction involves a hydrocarbon and oxygen making water and carbon dioxide.

Back

The Answer is combustion

Reaction Types - 200

• Which reaction type best describes the reaction above?

Back

The Answer is single replacement.

Random Points

100 points

Reaction Types - 300

2 Fe + 3 Cl2 2 FeCl3• Which reaction type best describes the

reaction above?

Back

The Answer is synthesis.

Daily Double

Reaction Types - 400

• This type of reaction is shown in the following graphic:

Back

The Answer is decomposition

Reaction Types - 500

H2SO4 + 2 NaOH Na2SO4 + 2 H2O

• Which reaction type best describes the reaction above?

Back

The Answer is neutralization.

Random Points

400 points

Note Type Questions - 100

• This type of reaction involves a hydrocarbon and oxygen making water and carbon dioxide.

Back

The Answer is combustion

Note Type Questions - 200

• If an atom is reduced in a redox reaction, what must happen to another atom in the system?

Back

The Answer is it must be oxidized.

Note Type Questions - 300

• Chemical equations must be balanced to satisfy ___________________________ (multiple words).

Back

The Answer is the law of conservation of mass

Note Type Questions - 400

• An element in the activity series can replace any element

Back

The Answer is below it on the list.

Note Type Questions - 500

• An insoluble solid produced by a chemical reaction in solution is called

Back

The Answer is a precipitate.

The Final Question

• The final question has to deal with:

»Balancing Chemical Reactions and Classifying Reactions from words

Make your wager

Balance the following equation and classify the type of reaction.

• Tetracarbon decahydride and oxygen react together to make carbon dioxide and water.

The Answer

• 2 C4H10 + 13 O2 8 CO2 + 10 H2O

• combustion