Chapter 11

Question 1

Allotropes

Answer 1

Each of two or more different physical forms in which an element can exist

Question 2

intermolecular forces

Answer 2

A weak force of attraction between molecules, ions or atoms of noble gasses

Question 3

intramolecular forces

Answer 3

a bond which occurs between atoms within molecules

Question 4

viscosity

Answer 4

a measure of the ability of liquid to flow

Question 5

electrolysis

Answer 5

chemical decomposition of a substance by passing an electric current through a liquid or solution containing ions

Question 6

what 2 types of structures cab covalent bonds have? Describe them

Answer 6

Molecular structure:
These substances consist of molecules

Lattice structure:
• Giant structure consisting of many hundreds, thousands or millions of units linked together in a repetitive pattern
• Carbon can be graphite/ diamond depending on lattice structure

Question 7

IntERmolecular forces

Answer 7

Between molecules -> binding them together

Question 8

IntRAmolecular forces

Answer 8

inside molecule -> biding atoms together

Question 9

Molecular vs Empirical formulae
Explain
&
Examples

Answer 9

• Molecular: Gives exact amount of atoms of each type of atom
C6H12O6

• Gives the simplest ratio in which atoms of molecules bind ; can be same as molecular
CH2O

Question 10

Name ways of ionizing water

Answer 10

adding a small amount of SALT 
such as: 
• sodium sulphate 
• copper chloride 
• few drops of sulfuric acid

Question 11

electrode

Answer 11

conductor through which electricity enters or leaves an object

Question 12

why can’t the electrodes touch?

Answer 12

current will flow directly from one electrode to the other and bot go through the liquid
the results = no electrolysis of liquid and potentially damages the power supply

Question 13

electrolyte

Answer 13

a substance that can conduct electricity by forming free ions when molten or dissolved in a solution

Question 14

Look @ diagram about cathodes & anodes

Answer 14

asb en dankie