Simple Molecules & Covalent Bonding quiz

1. Explain why carbon dioxide gas, CO₂, is a gas at room temperature

Carbon dioxide has a giant covalent structure with many strong covalent bonds which require a lot of energy to overcome

Carbon dioxide has a simple molecular structure with weak intermolecular forces that require little energy to overcome

Carbon dioxide has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcome

Carbon dioxide has a giant covalent structure with many weak covalent bonds which require little energy to overcome

Question 1 of 16

2. 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 oppositely charged ions

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

Question 2 of 16

3. What are the elements in group 0 called?

Halogens

Alkali metals

Noble gases

Light gases

Question 3 of 16

4. Explain, in terms of electrons, why isotopes have the same chemical properties

Isotopes have different masses

Isotopes have the same number of electrons

Isotopes have the same number of protons but a different number of neutrons

Isotopes are radioactive

Question 4 of 16

5. What is meant by the term molecule?

A molecule is made of a fixed number of two or more atoms covalently bonded together

A molecule contains at least three atoms

A molecule is found in the nucleus of an atom

A molecule is the smallest part of an element

Question 5 of 16

6. 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 less energy to overcome.

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

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

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

Question 6 of 16

7. How many electrons in a magnesium atom?

12

13

24

14

Question 7 of 16

8. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of hydrogen (H₂), how many electrons should be shown in areas 1, 2 and 3?

There should be zero electrons in areas 1 and 3, and two electrons in area 2

There should be seven electrons in areas 1 and 3, and four electrons in area 2

There should be six electrons in areas 1 and 3, and two electrons in area 2

There should be seven electrons in areas 1 and 3, and two electrons in area 2

Question 8 of 16

9. On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?

same number of electrons in the outer shell

same number of electron shells

Same electronic configuration

Same number of electrons in the inner shell

Question 9 of 16

10. How many neutrons in a typical atom of sulfur?

16

32

15

42

Question 10 of 16

11. What are the three subatomic particles?

Chlorine, bromine, iodine

+1, 0 and -1

protons, neutrons and electrons

Atoms, molecules and ions

Question 11 of 16

12. Describe the formation of a covalent bond

The sharing of a pair of electrons between two nuclei

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

Question 12 of 16

13. How are elements arranged in the periodic table?

in no particular order

in order by mass number

in order by size

in order by atomic number

Question 13 of 16

14. Describe the test for chlorine gas

Turns damp red litmus paper blue

Turns moist litmus paper white (bleaches)

Relights a glowing splint

Burns with a squeaky pop

Question 14 of 16

15. Where are metals found on the periodic table?

At the top right

On the left, reaching across the middle

Only in the left hand column

Only on the bottom row

Question 15 of 16

16. 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 16 of 16

Simple Molecules & Covalent Bonding quiz

Simple Molecules & Covalent Bonding quiz

Related Posts:

Share This Story, Choose Your Platform!