3.2 Atoms and Ions

Question 1

proton relative mass and charge

Answer 1

mass - 1
charge - +1

Question 2

neutron relative mass and charge

Answer 2

mass - 1
charge - 0

Question 3

electron relative mass and charge

Answer 3

mass - 0.0005
charge - -1

Question 4

where are protons and neutrons found

Answer 4

nucleus

Question 5

where are electrons found

Answer 5

shells

Question 6

atomic number

Answer 6

the number of protons/electrons (same)
bottom number

Question 7

mass number

Answer 7

the number of protons/electrons and neutrons
top number

Question 8

isotope definition

Answer 8

atoms with the same number of protons but a different number of neutrons

Question 9

How to calculate RAM (relative atomic mass)

Answer 9

(%abundance/100 x mass) + (%abundance/100 x mass)
of each isotope

Question 10

What does the row on the periodic table tell you

Answer 10

period = number of occupied electron shells

Question 11

What does the column on the periodic table tell you

Answer 11

group = number of electrons in outer shell

Question 12

Oxidation

Answer 12

loss of electrons

Question 13

Reduction

Answer 13

gain of electrons

Question 14

ionic structure

Answer 14

ions are arranged in a giant ionic lattice

Question 15

ionic bonding definition

Answer 15

the electrostatic attraction between oppositely charged ions

Question 16

ionic bonding strength

Answer 16

very strong attraction

Question 17

ionic compound melting point

Answer 17

ionic bonds are very strong
there are lots of ionic bonds in a giant ionic lattice
breaking these bonds require a large amount of energy

Question 18

ionic compounds conductivity

Answer 18

solids - no conductivity, ions not free to move
liquid/gas - high conductivity, ions can move freely and carry charge