Chemistry 2

Question 0

What is a chemical bond?

Answer 0

A force of attraction between atoms or ions

Question 1

What is an electrolyte?

Answer 1

Is a substance that when dissolved creates a solution that is conductive

Question 2

What are the differences between ionic and covalent bonds?

Answer 2

Ionic
Metals and non metals
Transfer electrons

Covalent
Non metals with non metals
Share electrons

Question 3

What are the properties of a molecular compounds?

Answer 3

State: any
Form any
Hardness usually soft
Odour yes because the molecules are not held together as tightly
Solubility varies
Melting point much lower than ionic bonds
Electrical conductivity: no in solutions no ions are formed non-electrolytes

Question 4

What are the seven diatomic molecules?

Never found separated on earth

Answer 4

Hobrfincl
Hydrogen
Oxygen
Bromine
Fluorine
Iodine
Nitrogen
Chlorine

Question 5

What are the properties of ionic compounds?

Answer 5

State: solid
Form :crystalline
Hardness :hard due to the strength of many ionic bonds holding the ions together
Odour: none b/c the strength of the ionic bonds
Solubility: good water pulls the lattice apart
Melting point: very high
Electrical conductivity: yes but only when dissolved. The ions are pulled apart from the lattice due to the water molecules strength. This creates electrolytes

Question 6

Why does bonding occur?

Answer 6

A force of attraction between the particles draws them together.

Question 7

What does a metal become in a bonding?

Answer 7

A cation loses its electrons

Question 8

What does a non metal become when bonding?

Answer 8

An anion which gains electrons.