Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

1. Science 20 > A: Chemistry = Chemical Changes 2.4 Using Voltaic Cells > Flashcards

A: Chemistry = Chemical Changes 2.4 Using Voltaic Cells Flashcards

1
Q

What is the role of metals in human life?

A

Metals play a significant role in various applications and technologies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What factors influence a metal’s susceptibility to corrosion?

A

Different rates of chemical reactivity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why does silver jewellery tarnish while gold jewellery does not?

A

Due to differences in chemical reactivity and susceptibility to corrosion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is an example of a beneficial effect of corrosion?

A

Copper artifacts were preserved by a protective layer of green corrosion (basic copper carbonate).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What key processes are involved in corrosion reactions?

A

Oxidation and reduction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a voltaic cell?

A

A device that spontaneously produces electricity by redox reactions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do we commonly refer to a group of voltaic cells connected together?

A

A battery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does a battery of voltaic cells provide for devices?

A

A continuous flow or current of electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do components in a calculator utilize energy from a battery?

A

They convert the energy from the current into other work.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens to electrons as they leave one end of a voltaic cell?

A

Another group enters to maintain the flow.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Fill in the blank: A battery is a set of _______ cells joined to produce an electric current.

A

voltaic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

True or False: A battery can consist of a single voltaic cell.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What causes the flow of electrons in a voltaic cell?

A

Reduction and oxidation reactions combining metals that lose and gain electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a voltaic cell?

A

A voltaic cell uses the transfer of electrons between its chemical components to create an electric current that can flow through an external circuit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How is the connection to the external circuit made in a voltaic cell?

A

Through wires that contact each electrode of the voltaic cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens to a substance that is oxidized in a voltaic cell?

A

It loses electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What happens to a substance that is reduced in a voltaic cell?

A

It gains electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the purpose of the investigation involving a voltaic cell?

A

To explore the oxidation and reduction reactions that occur inside a voltaic cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is an electrode?

A

A solid electrical conductor in a cell that connects a cell to an external circuit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What materials are needed to build a working voltaic cell?

A

2 beakers and a voltmeter (or digital multimeter).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

True or False: A voltaic cell generates electricity through the flow of protons.

A

False.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Fill in the blank: A voltaic cell creates an electric current through the transfer of _______.

A

electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the role of a voltmeter in the context of a voltaic cell?

A

To measure the electric current generated by the cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is a voltaic cell?

A

A voltaic cell uses the transfer of electrons between its chemical components to create an electric current that can flow through an external circuit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

How is the connection to the external circuit made in a voltaic cell?

A

Through wires that contact each electrode of the voltaic cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What happens to a substance that is oxidized in a voltaic cell?

A

It loses electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What happens to a substance that is reduced in a voltaic cell?

A

It gains electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is the purpose of the investigation involving a voltaic cell?

A

To explore the oxidation and reduction reactions that occur inside a voltaic cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is an electrode?

A

A solid electrical conductor in a cell that connects a cell to an external circuit.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What materials are needed to build a working voltaic cell?

A

2 beakers and a voltmeter (or digital multimeter).

31
Q

True or False: A voltaic cell generates electricity through the flow of protons.

A

False.

32
Q

Fill in the blank: A voltaic cell creates an electric current through the transfer of _______.

A

electrons.

33
Q

What is the role of a voltmeter in the context of a voltaic cell?

A

To measure the electric current generated by the cell.

34
Q

What is the electrode called where oxidation occurs?

A

Anode

The anode is the electrode in a cell where the oxidation half-reaction occurs.

35
Q

What is the electrode called where reduction occurs?

A

Cathode

The cathode is the electrode in a cell where the reduction half-reaction occurs.

36
Q

Which metal is located below copper in the activity series?

A

Zinc

Zinc is located below copper, indicating it has a greater tendency to be oxidized.

37
Q

What happens to the zinc electrode in the electrochemical cell?

A

Loses electrons

The zinc electrode is oxidized, meaning it loses electrons.

38
Q

What happens to the copper electrode in the electrochemical cell?

A

Receives electrons

The copper electrode is reduced, meaning it receives electrons.

39
Q

Fill in the blank: Anode and oxidation both begin with _______.

A

Vowels

40
Q

Fill in the blank: Cathode and reduction both begin with _______.

A

Consonants

41
Q

What tendency do metal atoms located closest to the bottom of the activity series have?

A

Greatest tendency to be oxidized

This indicates that they are more likely to lose electrons.

42
Q

What is the role of the anode in an electrochemical cell?

A

Oxidation half-reaction occurs

The anode facilitates the oxidation process.

43
Q

What is the role of the cathode in an electrochemical cell?

A

Reduction half-reaction occurs

The cathode facilitates the reduction process.

44
Q

What is the ideal apparatus for learning about the operation of a voltaic cell?

A

A set-up with two beakers and a salt bridge.

45
Q

What type of packaging do most people use for voltaic cells?

A

Small, sealed containers.

46
Q

What are the cells commonly referred to as, even though they are not completely dry?

A

Dry cells.

47
Q

What do dry cells actually contain as the electrolyte?

A

A moist paste.

48
Q

True or False: If dry cells were completely dry, they would work properly.

A

False.

49
Q

What is the oxidation reaction in a standard consumer cell?

A

Zn(s) → Zn(aq) + 2e

50
Q

What is the reduction reaction in a standard consumer cell?

A

2 NH₄⁺(aq) + 2 MnO₂(s) + 2e → Mn₂O₄(s) + NH₃(g) + H₂O(l)

51
Q

How many consumer cells are purchased every year in North America?

A

About three billion

52
Q

What are the two strategies mentioned to help reduce environmental harm from consumer cells?

A
  • Sending spent cells to local recycling centres
  • Using rechargeable cells
53
Q

True or False: The oxidation reaction of a consumer cell is more complex than the reduction reaction.

A

False

54
Q

Fill in the blank: The oxidation and reduction processes in consumer cells rely on the principles of _______ and _______.

A

oxidation, reduction

55
Q

What is a consequence of releasing metals and electrolytes from consumer cells into the environment?

A

They are harmful

56
Q

What is one benefit of using rechargeable cells?

A

Reduces the number of cells needed over a product’s lifetime

57
Q

What type of diagram is referenced in the context of a standard consumer cell?

A

S H asts diagram

58
Q

What is the state of zinc in the oxidation reaction of a consumer cell?

A

Solid (s)

59
Q

What do electrical devices, like MP3 players and portable CD players, require to function?

A

Energy from electrons

60
Q

What is the purpose of a voltaic cell?

A

To create an electrical current through spontaneous oxidation and reduction reactions

61
Q

How can the activity series for metals and metal ions be used?

A

To predict which electrode will be the anode and which will be the cathode

62
Q

Where does oxidation occur in a voltaic cell?

A

At the anode

63
Q

What is the role of the anode in a voltaic cell?

A

Source of electrons for an external circuit

64
Q

Where do electrons flow from and to in a voltaic cell?

A

From the anode through the external circuit to the cathode

65
Q

Where does reduction occur in a voltaic cell?

A

At the cathode

66
Q

What is required to keep a voltaic cell working?

A

Replenishment of reactants

67
Q

What do electrical devices, like MP3 players and portable CD players, require to function?

A

Energy from electrons

68
Q

What is the purpose of a voltaic cell?

A

To create an electrical current through spontaneous oxidation and reduction reactions

69
Q

How can the activity series for metals and metal ions be used?

A

To predict which electrode will be the anode and which will be the cathode

70
Q

Where does oxidation occur in a voltaic cell?

A

At the anode

71
Q

What is the role of the anode in a voltaic cell?

A

Source of electrons for an external circuit

72
Q

Where do electrons flow from and to in a voltaic cell?

A

From the anode through the external circuit to the cathode

73
Q

Where does reduction occur in a voltaic cell?

A

At the cathode

74
Q

What is required to keep a voltaic cell working?

A

Replenishment of reactants

1. Science 20 (52 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions