Bridging the Gap
Playing with Numbers
Gains and Losses
Power Cells
Anything Goes
100

The charge that an atom in a molecule would develop if the most electronegative atoms in the molecule took the shared electrons from the less electronegative atoms.

What is an oxidation number?

100

Oxidation number of H2.

What is 0?

100
The process by which an atom loses electrons.
What is oxidation?
100
Contains an aqueous ionic compound and helps the battery work by balancing out the charges.
What is a salt bridge?
100
Law of Definite Proportions
What is the proportion of elements in any compound is always the same?
200
Oxidation numbers treat all compounds as what?
What is ionic?
200

What is Ca: +2, O: -2, H: +1

Oxidation numbers of Ca(OH)2.

200
LEO says GER means . . .
What is Lose Electrons Oxidation and Gain Electrons Reduction?
200
Negative side of a battery.
What is an anode?
200
Kinetic theory of matter: Molecules and atoms are in constant motion, and the __________ the temperature, the greater their __________.
What is higher and speed?
300
The sum of all oxidation numbers in a molecule must equal this.
What is the charge of that molecule?
300

Oxidation numbers of NaSO4-.

What are Na: +1, S: +6, O: -2

300
Process by which an atom gains electrons.
What is reduction?
300
Electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.
What is Galvanic cell?
300
Chemical formula for the compound that forms when Na and N are reacted together. Also, what is the name?
What is Na3N and Sodium nitride?
400
The oxidation number of iron in Fe3+
What is +3?
400
Oxidation numbers of NCl3.
What are N: +3, Cl: -1?
400
An atom goes from a +5 oxidation number to +3. Was it oxidized or reduced? How many electrons participated in the change?
What is reduced and two electrons?
400
Positive side of the battery.
What is a cathode?
400
Three properties of acids.
What are sour taste, covalent compounds that conduct electricity when added to water, and turns blue litmus paper red?
500
The oxidation number of Mg in MgBr2 in 2+. What is the oxidation number of Br in that same compound?
What is -1?
500
Oxidation numbers of MgCoBr4.
What are Mg: +2, Co: +2, Br: -1
500
Is this a redox reaction? If it is identify the atoms whose oxidation numbers changed and tell whether they were oxidized or reduced. Cu2+(aq) + Zn(s) yields Zn2+(aq) + Cu(s)
What is it is a redox reaction. Cu was reduced and Zn was oxidized.
500
Battery used in an automobile.
What is a lead-acid battery?
500
First law of thermodynamics.
What is energy cannot be created or destroyed. It can only change form?
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