Chemical Bonding Flashcards
1
Q
Define Molecule.
A
A group of atoms joined together. It is the smallest particle of an element or compound that can exist independently.
2
Q
Describe a covalent bond?
A
A bond that consists of shared electrons.
3
Q
Define the octet rule.
A
When bonding occurs, atoms try to have eight electrons in their outer shell
4
Q
List the three properties of covalent compounds?
A
- Low melting and boiling points.
- Usually liquid or gas at room temperature.
- Does not conduct electricity.
5
Q
List three properties of ionic compounds?
A
- Usually solid at room temperature.
- High melting/boiling points.
- Usually soluble in water.
6
Q
Define ‘single bond’
A
A single bond is formed when one pair of electrons is shared.
7
Q
Define double bond
A
When two pairs of electrons are shared.
8
Q
Define ‘ion’
A
An ion is a charged atom or group of atoms
9
Q
Define an ionic bond
A
The force of attraction between positive and negative ions in a compound
10
Q
What type of bonding is in the molecule of sodium chloride?
A
Ionic bonding
