Do you understand the Law of Conservation of Mass?
Conservation of Mass Quiz
Rated 2 out of 5
2 out of 5 stars (based on 3 reviews)
Good Luck!
Time limit: 0
Quiz Summary
0 of 6 Questions completed
Questions:
Information
You have already completed this quiz. You cannot start it again.
Quiz is loading…
You must sign in or sign up to take this quiz.
You must first complete the following:
Results
Quiz complete. Results are being recorded.
Results
0 of 6 Questions answered correctly
Your Time:
Time has elapsed.
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
| Average Score |
|
| Your Score |
|
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- Current
- Review
- Answered
- Correct
- Incorrect
-
Question 1 of 6Question 1
The mass before reactions is the same as after reactions, this is known as the Law of ……
CorrectIncorrect -
Question 2 of 6Question 2
Closed, non-enclosed, neutralisation, precipitation, equal, non-equal
-
Complete the statement describing a chemical reaction:
Potassium iodide solution and lead nitrate solution react in a closed flask to form a yellow precipitate of lead iodide and a colourless solution of potassium nitrate. This is a reaction and since it occurs in a closed flask it is an example of a system. The mass of the reactants and products will be .
CorrectIncorrect -
-
Question 3 of 6Question 3
In non-enclosed systems, the mass of the products may be lower than the reactants. This does not violate the Law of Conservation of Mass. Why is this the case?
CorrectIncorrect -
Question 4 of 6Question 4
In non-enclosed systems, the mass of the products may be higher than the reactants. This does not violate the Law of Conservation of Mass. Why is this the case?
CorrectIncorrect -
Question 5 of 6Question 5
Calculate the mass of fluorine needed to make 100g of magnesium fluoride. Consult the periodic table for all of the information you will need. Answer to one decimal place.
The balanced chemical equation for this reaction is:
F₂ + Mg → MgF₂
-
g
CorrectIncorrect -
-
Question 6 of 6Question 6
Calculate the mass of oxygen needed to react with 20g of hydrogen to make water.
The balanced chemical equation for this reaction is:
2H₂ + O₂ → 2H₂O
-
g
CorrectIncorrectYou will need the periodic table to answer this question. A full explanation is provided at the top of the quiz
-
Which exam board are you studying?