Bell Work Write down these equations, then answer the following: __BiCl 5 + __Zn  __ZnCl 2 + __Bi and __Mg(NO 3 ) 2 + __Na 2 SO 4  __NaNO 3 + __MgSO 4 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: Fe 2 O 3 H 2 Zn +2 Na 2 OCO 3 -2 H 2 Cr 2 O 7 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 Ag

Choose Your Category Will It Happen Oxidation Numbers Redox Reactions Balancing Chemical Reactions Reaction Types Note Type Questions Final Question

Random Points 400 points

Will It Happen This can be used to determine if a single replacement reaction can occur. Back The Answer is an activity series

Will It Happen Will the following reaction occur? AlO + Fe  Back The Answer is no because Fe is lower than Al

Will It Happen Will the following reaction occur? Zn + CuSO 4  Back The Answer is yes because Zn is higher than Cu

Random Points 200 points

Will It Happen Will the following reaction occur? AgNO 3 + (NH 4 ) 2 SO 4  Back The Answer is no Because product would be Ag 2 SO 4 (aq) and NH 4 NO 3 (aq)

Will It Happen Will the following reaction occur? Na 2 CO 3 + BaCl 2  Back The Answer is yes because BaCO 3 would be a solid.

Oxidation Numbers The oxidation number of a monatomic ion is equal to _____________________ The Answer is the charge of the ion. Back

Oxidation Numbers What is the oxidation number of Cu. The Answer is 0. Back

Random Points 200 points

Oxidation Numbers The most electronegative element on the periodic table has an oxidation number of ______________ when in a compound. The Answer is -1. Back

Oxidation Numbers Assign oxidation numbers to all the atoms in the following: HOCl The Answer is +1/-2/+1. Back

Oxidation Numbers Assign oxidation numbers to all the atoms in the following: AlNO 3 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  MgCl 2 + H 2 Back The Answer is H (it went from a +1 to a 0).

Daily Double

Redox Reactions – 400 2Br -1 + H 2 O 2 + 2H 3 O + --> Br 2 + 4H 2 O What element was reduced? What element was oxidized? What is the Reducing Agent? What is the Oxidizing Agent? Back Oxygen Bromine Br -1 H 2 O 2 (peroxide)

Redox Reactions – 500 What is the reducing agent in the following reaction? HNO 3 + HBr  NO + Br 2 + H 2 O Back The Answer is HBr

Balancing Chemical Reactions These are the only thing that can be used to balance chemical equations. Back The Answer is coefficients

Balancing Chemical Reactions Balance the following equation: ___ CaCO 3 (s)  ___ CaO(s) + ___ CO 2 (g) Back The Answer is 1,1,1

Random Points 500 points

Balancing Chemical Reactions Balance the following equation: __ CaH 2 + __ H 2 O  __ Ca(OH) 2 + __ H 2 Back The Answer is 1,2,1,2

Balancing Chemical Reactions AlCl 3 (aq) + Ba(OH) 2 (aq) --> Al(OH) 3 (s) + BaCl 2 (aq) When this equation is correctly balanced, the coefficient of the AlCl 3 will be — Back The Answer is 2

Balancing Chemical Reactions Balance the following equation: __ C 6 H 14 + __ O 2  __ CO 2 + __ H 2 O Back The Answer is 2, 19, 12, 14

Reaction Types This type of reaction involves a hydrocarbon and oxygen making water and carbon dioxide. Back The Answer is combustion

Reaction Types Which reaction type best describes the reaction above? Back The Answer is single replacement.

Random Points 100 points

Reaction Types Fe + 3 Cl 2  2 FeCl 3 Which reaction type best describes the reaction above? Back The Answer is synthesis.

Daily Double

Reaction Types This type of reaction is shown in the following graphic: Back The Answer is decomposition

Reaction Types H 2 SO NaOH  Na 2 SO H 2 O Which reaction type best describes the reaction above? Back The Answer is neutralization.

Random Points 400 points

Note Type Questions This type of reaction involves a hydrocarbon and oxygen making water and carbon dioxide. Back The Answer is combustion

Note Type Questions 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 Chemical equations must be balanced to satisfy ___________________________ (multiple words). Back The Answer is the law of conservation of mass

Note Type Questions An element in the activity series can replace any element Back The Answer is below it on the list.

Note Type Questions 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 C 4 H O 2  8 CO H 2 O combustion