Practice Identifying Oxidation And Reduction In Redox Reactions (3)

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does oxidation mean?
Show hintHide hint
Think about what happens to electrons.
Question 2.
What is a mnemonic to help remember oxidation and reduction?
Show hintHide hint
It’s about the electrons!
3Question 3.
What process does oxidation refer to?
- Gaining electrons
- Losing electrons
- Neither
Show hintHide hint
Think about OIL RIG.
4Question 4.
True or False: Reduction occurs when an element loses electrons.
- True
- False
Show hintHide hint
Remember the meanings of oxidation and reduction.
Question 5.
A complex redox reaction involves Cr₂O₇²⁻ + C₂O₄²⁻ → Cr³⁺ + CO₂. Assign oxidation states and identify all oxidized and reduced substances.
Show hintHide hint
Pay attention to the oxidation states before and after the reaction.
Question 6.
Consider the reaction of hydrogen peroxide (H₂O₂) decomposing into water (H₂O) and oxygen (O₂). Identify the oxidation states of hydrogen and oxygen and determine the changes.
Show hintHide hint
How does the oxidation state of oxygen change?

5 more questions in this section. Enroll free to practise them all.