Grade 4 & 5 Chemistry: Free Trial*

G. 10 & 11

Chemistry

F. 4 & 5

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G. 10 & 11 / F. 4 & 5

Chemistry: Free Trial*

MCQs

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User NameEmailPhone NumberCountryCountry - Town/City

1 / 10

1. How many covalent bonds can nitrogen form?

A. 2

B. 1

C. 4

D. 3

2 / 10

2. Salts can also be made by reacting metals with acids. What gas is given off when a metal reacts with an acid?

A. Hydrogen

B. Nitrogen

C. Carbon dioxide

D. Oxygen

3 / 10

3. What is an acid?

A. A substance that produces $H^{+}$ ions when added to water

B. A soluble base

C. A substance that will neutralize an acid

D. A chemical that changes colour when added to acids and alkalis

4 / 10

4. Superconductors...

A. work at any temperature

B. have little or no resistance

C. conduct an orchestra really well

D. conduct heat better than other materials

5 / 10

5. What type of structure does the carbon in diamond form?

A. Giant structure

B. Giant covalent structure

C. Ionic bond

D. Covalent bond

6 / 10

6. The type of bonding that holds the atoms together in salt is...

A. covalent

B. ionic

C. metallic

D. hydrogen

7 / 10

7. What type of bonding occurs when electrons are shared between the atoms in a molecule?

A. Metallic

B. Covalent

C. Hydrogen

D. Ionic

8 / 10

8. A stable equilibrium can be achieved in a...

A. chemical system

B. open system

C. closed system

D. reaction system

9 / 10

9. At equilibrium, the amount of product(s) and reactant(s) is constant. Which of the following would increase the amount of product in a reaction?

A. Increase the pressure of the reaction vessel

B. Add more product to the reaction vessel

C. Increase the temperature of the reaction mixture

D. Remove the product from the reaction vessel

10 / 10

10. When a metal atom becomes a metal ion...

A. it becomes negatively charged

B. it becomes positively charged

C. it doesn't change its charge

D. it becomes neutrally charged

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