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- 1. Multiple Choice
What is a covalent bond?
A bond formed between oppositely charged ions
A bond formed when two atoms share a pair of electrons
A bond formed by delocalised electrons
- 2. Multiple Choice
In a dot and cross diagram, what does each dot represent?
A neutron
A proton
An electron
- 3. Multiple Choice
What is the total number of atoms in an CCl4 molecule?
2
3
4
5
- 4. Multiple Choice
What is the greatest number of covalent bonds that one carbon atom can form?
1
2
3
4
- 5. Multiple Choice
How many electrons are shared in a double bond?
2
4
6
- 6. Multiple Choice
When a substance made of small molecules boils, what does the energy overcome?
Intermolecular forces
Ionic bonds
Covalent bonds
- 7. Multiple Choice
Which statement best explains why substances made of small molecules cannot conduct electricity?
They have no charged particles that are free to move from place to place
They cannot move from place to place
They have no charged particles
- 8. Multiple Choice
Which statement best explains why diamond has a high melting point?
It has strong covalent bonds
A large amount of energy is needed to break its strong covalent bonds
A large amount of energy is needed to break its bonds
- 9. Multiple Choice
What is triple bond?
Three electrons shared between two atoms
Two electrons shared between three atoms
Three pairs of electrons shared between two atoms
- 10. Multiple Choice
What is the total number of electrons shared in a water molecule?
1
2
3
4
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