3.2.1- Atoms and Ions

Question 1

types of subatomic particles?

Answer 1

proton- 1.000 - +1
neutron- 1.000 - 0
electron- 0.0005- -1

Question 2

Location of subatomic particles

Answer 2

protons + neutrons= nucleus= centre
electrons= outer shells

Question 3

Specification of atoms

Answer 3

mass number= number of neutrons
atomic number= total number of protons + electrons

Question 4

definition of isotopes

Answer 4

Isotopes are atoms with the same number of protons but different number of neutrons

Question 5

Relative atomic mass (RAM)

Answer 5

(abundance/100 x mass) + (abundance/100 x mass)

Question 6

definition of an element

Answer 6

A substance containing only one type of atom

Question 7

metal and non-metal properties

Answer 7

metal- high mp/bp, electrical conductor, malleable, shiny
non-metal- low mp/bp, electrical insulator, brittle, dull

Question 8

the 8 diatomic molecules

Answer 8

element- hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine, astatine
symbol- H2, N2, O2, F2, Cl2, Br2, I2, At2

Question 9

definition of a compound

Answer 9

A substance containing more than one type of atom, chemically bonded together

Question 10

Making compounds

Answer 10

Formed by heating elements e.g. zinc+ sulphur—> zinc sulphide

Question 11

properties of compounds

Answer 11

e.g. Sodium chloride—> corrosive, metal, toxic gas, makes a salt

Question 12

types of compound

Answer 12

3 types- containing a different type of chemical bonding, depending whether they are:
metal—> metallic
both—> ionic
non-metal—> covalent

Question 13

Definition of element combustion

Answer 13

When an element reacts with oxygen to produce an oxide