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- 1. Multiple Choice
Harper and Anika are conducting a chemistry experiment. They are observing a reaction where one reactant loses electrons and the other gains them. What type of reaction are they observing?
A reaction where both reactants get reduced.
A reaction where both reactants get oxidized.
A reaction that involves a transfer of electrons between reactants.
A reaction that involves the combustion of at least one reactant.
- 2. Multiple Choice
Abigail, Noah, and Priya are in a chemistry lab. Abigail says that reduction is a process in a chemical reaction. Can you help Noah understand what reduction is?
It is the process where a substance gains electrons during a chemical reaction.
It is the process where a substance loses electrons during a chemical reaction.
It is the process where a substance creates electrons during a chemical reaction.
It is the process where a substance destroys electrons during a chemical reaction.
- 3. Multiple Choice
In a chemistry class, Lily and Aiden were discussing a chemical reaction. Lily said that oxidation is happening in the reaction. What did she mean by oxidation?
It is the gain of electrons.
It is the loss of electrons.
It is the creation of electrons.
It is the destruction of electrons.
- 4. Multiple Choice
During a chemistry experiment, William and Ethan were discussing the role of a reducing agent. What is a reducing agent?
It is the species that gets reduced -- gains electrons.
It is the species that gets oxidized -- loses electrons.
It is the species that creates electrons.
It is the species that destroys electrons.
- 5. Multiple Choice
In a chemistry experiment, Nora and Noah are trying to identify an oxidizing agent. Which of the following best describes an oxidizing agent?
It is the species that gets reduced -- gains electrons.
It is the species that gets oxidized -- loses electrons.
It is the species that creates electrons.
It is the species that loses electrons.
- 6. Multiple Choice
Abigail and Charlotte are learning about galvanic (voltaic) cells in their chemistry class. Michael asks them to explain what a galvanic cell is. Which of the following explanations is correct?
It is a cell that destroys electrons on one side and creates electrons on the other side.
It is a cell that contains only one metal bar and one aqueous ion solution.
It is a type of battery that drives a redox reaction when electricity is applied.
It is a type of battery that generates an electrical current from redox reactions.
- 7. Multiple Choice
Ethan, Mia, and David are studying for a chemistry test. Ethan is confused about the concept of a half-reaction. Mia tries to explain it to him. Which of the following explanations given by Mia is correct?
It is a reaction at equilibrium where half of the substances are reactants and half of the substances are products.
It is the reaction that occurs when the switch of a galvanic cell is open.
It shows EITHER the reduction component or the oxidation component of a redox reaction.
It shows BOTH the reduction and oxidation components of a redox reaction.
- 8. Multiple Choice
During a science experiment, Harper and David were given two electrodes. Harper said the anode is the electrode where oxidation takes place, while David said it's the electrode where reduction takes place. Sophia, on the other hand, thought it's an aqueous solution containing an electrode or the salt bridge that connects half-cells. Who is correct?
Harper is correct.
David is correct.
Sophia is correct.
None of them are correct.
- 9. Multiple Choice
During a chemistry experiment, Harper, Evelyn, and Maya are examining different electrodes. They come across a cathode. What is a cathode according to their understanding?
It is the electrode where oxidation takes place.
It is the electrode where reduction takes place.
It is an aqueous solution containing an electrode.
It is the salt bridge that connects half-cells.
- 10. Multiple Choice
David, Lily, and Anika are working on a chemistry experiment. They have two solutions, one of Cu2+/Cu with a standard reduction potential of 0.34V and another of Zn2+/Zn with a standard reduction potential of -0.76V. They need to determine which of the species is going to be oxidized in their experiment. Can you help them?
Cu
Zn
CuSO4
ZnSO4
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