Y8 Periodic Table

The periodic table is organised by ...

• Alphabetical order

• Increasing mass number

• Increasing atomic number

• The order in which elements were discovered

A proton has a relative mass of?

A neutron has a relative mass of?

A proton has a relative charge of?

A neutron has a relative charge of?

An electron has a relative charge of?

An electron has a relative mass of?

The group number tells us..

• How many electrons are in the outer shell of the atom

• How many protons the atom has

• How heavy the atom is

• The total number of electrons the atom has

The period number tells us?

• The total number of protons the atom has

• How many electrons are in the outer shell of the atom

• How many shells the atom has

• The total number of neutrons the atom has

What is the trend in reactivity has we go down group 1

• Decreasing

• Increasing