Chemistry Atom structure & the Periodic table Sept 2017

Question 0

What is the Atomic Number?

Answer 0

The bottom/smaller number

Question 1

What number is the Mass number?

Answer 1

Top number/bigger number

Question 2

What does the Atomic number tell you?

Answer 2

The number of Protons

Question 3

What does the mass number tell you?

Answer 3

The number of Protons and Neutrons

Question 4

What is an Isotope?

Answer 4

An Isotope is an atom with the same number of Protons but a different number of Neutrons

Question 5

What is relative Atomic mass?

Answer 5

Relative Atomic Mass is the average mass of atoms of an element taking into account the mass and amount of each Isotope it contains

Question 6

What are the rules for atoms?

Answer 6

Maximum of 2 electrons in the first shell
8 in shells 2 and 3
18 in all shells after 3

Question 7

What is a group?

Answer 7

A group is a column in the periodic table stating how many electrons are in all of the elements outer shells

Question 8

What is a period?

Answer 8

A period is a row in the periodic table stating how many shells are in each atom.

Question 9

What is an Ion?

Answer 9

An Ion is a charged particle as the atom doesn’t have the same amount of Protons as Electrons.

Question 10

What charge does an Ion have if it has more Protons?

Answer 10

It has a positive charge

Question 11

What charge does an Ion have if it has more Electrons?

Answer 11

It has a negative charge

Question 12

State two properties of metals

Answer 12

Any two from:
High melting point
Conductor of electricity
Conductor of heat
Shiny
High density
Strong
Basic oxides
Malleable

Question 13

State two properties of non-metals

Answer 13

Any two from:
Low melting point
Insulator of electricity
Insulator of heat
Dull
Low density
Weak
Acidic oxides
Low malleability

Question 14

What happens when metal react with metals?

Answer 14

Nothing because metals can’t react with each other

Question 15

What happens when non-metals react with non-metals?

Answer 15

The non-metals share Electrons and form covalent bonds

Question 16

What happens when metals react with non-metals?

Answer 16

The metals and non-metals transfer Electrons

Question 17

What is the similarity between the size of an atom and the reactivity of an atom in the Alkali metals (group 1)? Why?

Answer 17

As the size of the atom increases the reactivity increases because it is easier to lose an electron that is further away from the nucleus