Simple Molecules & Covalent Bonding quiz

1. On the Periodic table what is the meaning of the word Group?

A Group is a vertical column of similar elements

A Group is a collection of similar elements

A Group is a horizontal row of elements

A Group is collection of elements with the same number of electron shells

Question 1 of 16

2. In the dot and cross diagram of the outer electrons showing the covalent bonding of ammonia (NH₃), how many electrons should be shown in areas 1, 2, 3 and 4?

There should be 2 electrons in each of the areas 1, 2, 3 but none in 4

There should be one electron in each of the areas 1, 2, 3 and seven electrons in 4

There should be one electron in each of the areas 1, 2, 3 and five electrons in 4

There should be 2 electrons in each of the areas 1, 2, 3 and 4

Question 2 of 16

3. Why do elements in the same group of the periodic table have similar chemical properties?

Elements in the same group of the periodic table have different numbers of electrons in their outer shell

Elements in the same group of the periodic table are all the same type of element (metal, non-metal etc.)

Elements in the same group of the periodic table have the same number of electrons in their outer shell

Elements in the same group of the periodic table have the same number of protons

Question 3 of 16

4. If a substance has a simple molecular structure, what physical state might it be at room temperature?

Gas or liquid

Solid

Any state

Solid or liquid

Question 4 of 16

5. What is the total number of atoms in the formula Be(OH)₂ ?

3

2

4

5

Question 5 of 16

6. Where are non-metals found on the periodic table?

On the left, reaching across the middle

Only in the left hand column

At the top right, plus hydrogen

Only on the bottom row

Question 6 of 16

7. What is special about the elements in group 0?

They are all diatomic

They are very unreactive (because they have full outer electron shells)

They are all coloured gases

They have the same number of electrons

Question 7 of 16

8. Describe the chemical test for water

Find the boiling point. If it is 100 ⁰C water is present

Find the melting point. If it is 0 ⁰C then water is present

Add it to anhydrous potassium permanganate which will turn from white to purple if water is present

Add it to anhydrous copper(II) sulfate which will change from white to blue if water is present

Question 8 of 16

9. Describe the test for chlorine gas

Turns damp red litmus paper blue

Turns moist litmus paper white (bleaches)

Burns with a squeaky pop

Relights a glowing splint

Question 9 of 16

10. Why is the melting point of a smaller molecule lower than that of a larger molecule?

Larger molecules have fewer attractions between them. These take more energy to overcome.

Larger molecules have more attractions between them. These take less energy to overcome.

Larger molecules have more attractions between them. These take more energy to overcome.

Larger molecules have fewer attractions between them. These take less energy to overcome.

Question 10 of 16

11. How many protons in a silicon atom?

14

28

29

27

Question 11 of 16

12. Give the definition of a covalent bond

Strong electrostatic attraction between a postive ion and a sea of delocalised positive ions

Strong electrostatic attraction between a shared pair of electrons and two nuclei

Strong electrostatic attraction between a shared pair of electrons and a nucleus

Strong electrostatic attraction between oppositely charged ions

Question 12 of 16

13. How many electrons in the outer shell of group 1 elements?

0

1

2

3

Question 13 of 16

14. Describe the formation of a covalent bond

The transfer of electrons from one atom to another

The electrostatic attraction between positive metal ions and a sea of delocalised electrons

The sharing of a single electron between two nuclei

The sharing of a pair of electrons between two nuclei

Question 14 of 16

15. On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?

same number of electrons in the outer shell

Same electronic configuration

Same number of electron shells

Same number of electrons in the inner shell

Question 15 of 16

16. Which particle(s) in an atom has the smallest mass?

Proton

Electron

Electrons and neutrons

Neutron

Question 16 of 16

Simple Molecules & Covalent Bonding quiz

Simple Molecules & Covalent Bonding quiz

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