Covalent bonding

• Science
• Upper Secondary (Key Stage 4)
• GCSE

Covalent bonding - small covalents

Which particle has no charge?

1. Positron
2. Electron
3. Proton
4. Neutron

What determines an atom's atomic number?

1. Number of electrons
2. Mass of the atom
3. Number of protons
4. Number of neutrons

What is the nucleus made of?

1. Electrons and protons
2. Protons and neutrons
3. Photons and neutrinos
4. Quarks and leptons

Where are electrons located in an atom?

1. In electron shells
2. In neutron orbits
3. In the nucleus
4. In proton shells

What particle has a positive charge?

1. Proton
2. Photon
3. Electron
4. Neutron

What charge does a cation have?

1. Negative charge
2. Positive charge
3. Varied charge
4. No charge

What is an ion?

1. A molecule with no charge
2. An atom with unequal electrons
3. A neutral atom
4. A charged particle

What is an anion?

1. A positively charged ion
2. A neutral molecule
3. A stable atom
4. A negatively charged ion

Which one shows a
covalent bond?

1. Left: because they are sharing electrons
2. Right: because electrons are transferred
3. Both
4. None

What are you going to learn?

In this lesson you will:

• check your understanding of the covalent bond
   
• prepare to practice drawing or completing covalent bonds

Covalent bonds are formed between non metals:

Which of the following will not be involved in a covalent bond?

1. carbon
2. magnesium
3. hydrogen
4. fluorine

Which of the following elements will not form a covalent bond?

1. Helium
2. Boron
3. Sulfur
4. Iodine

electron shared by H

electron shared by O

electrons not being shared by O

Which sub-atomic particles are shared in a covalent bond?

1. proton
2. inner shell electron
3. neutron
4. outer shell electron

What term decribes
what happens to
electrons in a covalent bond?

What group of the periodic table
is carbon in?

Group 1

Group 3

Group 4

Group 7

Group 0

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

1

3

4

7

0

How many electrons does
carbon share in covalent bonds?

1

3

4

7

0

What group is chlorine in?

1. 1
2. 7
3. 0
4. 2

The number of electrons a non-metal atom needs is the number it will...

1. loose
2. gain
3. transfer
4. share

How many electrons does
chlorine need for a full outer
shell?

1. 1
2. 7
3. 0
4. 2

How many electrons does
chlorine share?

1. 1
2. 7
3. 0
4. 2

Oxygen is in group 6
how many will it
share?

Nitrogen is in group 5
how many will it
share?

Oxygen has 6 outer shell electrons, it shares 2, how many electrons are not involved in a covalent bond?

1. 2
2. 4
3. 6
4. 8

Bromine is in group 7, it shares 1 electron with Hydrogen, how many electrons are not involved in a covalent bond?

1. 2
2. 4
3. 6
4. 8

How many of the hydrogen
atom electrons are not involved
in a covalent bond?

1. 0
2. 1
3. 2
4. 8

Worksheet

Try to finish everything in class and hand in the worksheet at the end of this lesson

Draw, snip and post a covalent bond diagram for H2

Draw, snip and post a covalent bond diagram for O2

Draw, snip and post a covalent bond diagram for CH4

Draw, snip and post a covalent bond diagram for N2

Draw, snip and post a covalent bond diagram for F2

Draw, snip and post a covalent bond diagram for CO2

Draw, snip and post a covalent bond diagram for H2O

How did that go?

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