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Home/ CMR Form 1, 2, & 3 Subjects/Form 1, 2, & 3 Chemistry: Free Trial*

G. 8 & 9

Chemistry

F. 1, 2, & 3

Hello , welcome to QuizTime @ Quantum Solverz!
  • This MCQ  is a great way to help you revise this topic.
  • You will get 10 random questions for 20 minutes each time you take the quiz. Good luck!

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Hello ! Welcome to QuizTime @ Quantum Solverz.

 

 

Quiz Time Over!


G. 8 & 9 / F. 1, 2, & 3

Chemistry: Free Trial*

MCQs

Welcome to QuizTime @ Quantum Solverz.

1 / 10

1. If you reduce the volume of a gas...

Sorry, that is incorrect.

The gas particles are moving at the same speeds as before but there are more of them in a smaller space

Correct!

The gas particles are moving at the same speeds as before but there are more of them in a smaller space

2 / 10

2. When a gas changes to a liquid, it ...

Sorry, that is incorrect.

If a gas has energy taken away (is cooled) the particles slow down

Correct!

If a gas has energy taken away (is cooled) the particles slow down

3 / 10

3. Which of the following substances contain acid?

Sorry, that is incorrect.

Citrus fruit (oranges, lemons etc) contain citric acid

Correct!

Citrus fruit (oranges, lemons etc) contain citric acid

4 / 10

4. Which of these is NOT a compound?

Sorry, that is incorrect.

Chlorine is an element and therefore appears on the periodic table. The others do not appear on the periodic table so they cannot possibly be elements

Correct!

Chlorine is an element and therefore appears on the periodic table. The others do not appear on the periodic table so they cannot possibly be elements

5 / 10

5. The number of different elements in calcium carbonate ($CaCO_{3}$) are...

Sorry, that is incorrect.

The easy way to do this is to count the capital letters in the formula. Each element has exactly ONE capital letter. In $CaCO_{3}$, the three elements are Ca, C and O

Correct!

The easy way to do this is to count the capital letters in the formula. Each element has exactly ONE capital letter. In $CaCO_{3}$, the three elements are Ca, C and O

6 / 10

6. Which of the following is the correct balanced equation for the reaction between copper with oxygen from the air?

Sorry, that is incorrect.

There should be exactly the same number of each atom on both sides of an equation; otherwise, it has not been written down correctly, AND all the formulas should be correct. Answer 3 looks correct, but the formula for oxygen from the air is $O_{2}$ and not O.

Correct!

There should be exactly the same number of each atom on both sides of an equation; otherwise, it has not been written down correctly, AND all the formulas should be correct. Answer 3 looks correct, but the formula for oxygen from the air is $O_{2}$ and not O.

7 / 10

7. Which of the following metals is the most reactive with acids?

Sorry, that is incorrect.

When a metal reacts with dilute acids, hydrogen is produced

Correct!

When a metal reacts with dilute acids, hydrogen is produced

8 / 10

8. In the following reaction, which is the products

$Mg +2HCl \longrightarrow H_{2} + MgCl_{2}$ ?

Sorry, that is incorrect.

Metal plus acid gives hydrogen and a salt

Correct!

Metal plus acid gives hydrogen and a salt

9 / 10

9. The formula for copper nitrate is $Cu(NO_{3})_{2}$. This means it contains:

Sorry, that is incorrect.

Did you remember to multiply everything inside the brackets by two?

Correct!

Did you remember to multiply everything inside the brackets by two?

10 / 10

10. The formula for calcium hydroxide is $Ca(OH)_{2}$. This means it contains:

Sorry, that is incorrect.

Multiply everything inside the bracket by the number outside, just the same as you would do in maths

Correct!

Multiply everything inside the bracket by the number outside, just the same as you would do in maths

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