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Bonding with HONC

Total questions: 18

Worksheet time: 15mins

Name
Class
Date
1.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom. 
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
2.

Which of the following has a full valence shell?

a)

Oxygen

b)

Helium

c)

Hydrogen

d)

Carbon

3.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
4.

Why are we focusing on the elements H O N C ?

a)

it's fun to misspell the word honk

b)

they are the first 4 elements created after the Big Bang

c)

they are only found on Earth

d)

they make up the majority of the human body

5.

Why are the atoms attached to Carbon, putting Carbon in the middle of this molecular structure

a)

Carbon is magnetic

b)

Carbon has the most mass, thus the most gravitational pull

c)

Carbon is diamonds

d)

Carbon can make up to 4 bonds, the most possible

6.
What is the number of valence electrons for Oxygen?
a)
8
b)
6
c)
2
d)
1
7.

Atoms "want" / strive to have...

a)

A full outer shell of electrons

b)

One electron short of a full shell

c)

2 valence electrons

d)

their time in the sun

8.

Why can't Oxygen add one more Hydrogen to make H3O?

a)

Mickey Mouse only has 2 ears

b)

Hydrogen is very negatively charged

c)

Oxygen can only form 2 bonds

9.
According to the diagram below, how many bonds will this atom need to make to be stable?
a)
1
b)
2
c)
3
d)
4
10.
How many more valence electrons does Oxygen need to be stable?
a)
6
b)
2
c)
4
d)
It's already stable with 8
11.

How many molecules of water is this: 3H2O ? (write your answer as a number, not as a word)

(a)  

12.

How many atoms of Carbon are there in 4 molecules of carbon dioxide? 4CO2 - that's the chemical shorthand

a)

4

b)

1

c)

2

d)

8

13.

This could be the dot diagram (atom model showing valence electrons ONLY) of

a)

Ne

b)

H

c)

C

d)

F

14.

How many electrons can fit on the second energy level?

a)

8

b)

2

c)

10

d)

4

15.

How many bonds can this Phosphorus atom make? (hint: how many more electrons does it need for a full shell)

a)

5

b)

3

c)

13

d)

8

16.

How many more electrons does Hydrogen need to have a full shell?

a)

1

b)

7

c)

2

d)

8

17.

What do the 2 parallel lines in this O2 molecule represent?

a)

the flow of valence electrons

b)

the equality of each oxygen atom

c)

stacked valence electrons

d)

a double bond

18.

How many more valence electrons required to have a full shell?

a)

8

b)

2

c)

1

d)

7