Periodic Table and the Atom

Who created the periodic table as we know it?

• Dmitri Mendeleev

• Marie Curie

• Pyotr Ilyich Tchaikovsky

• Isacc Newton

Answer explanation

A Russian Scientist called Dmitri Mendeleev developed the periodic table in 1869

The periodic table is arranged according to the increasing ------ number of the elements

Answer explanation

In the modern periodic table, the elements are listed in order of increasing atomic number

Draw the line which separates metals from non-metals in the periodic table.

Answer explanation

Metals are on the left-hand side of the periodic table and non-metals are on the right-hand side of the periodic table

There is a natural staircase that goes from the bottom of Boron downwards.

'Bottom of Boron to the bottom'

Using the periodic table, find the atomic number of the metallic element Iron (Fe)

• 10

• 12

• 26

• 45

Answer explanation

The Atomic number of Iron (Fe) is 26 which means it has 26 protons in its nucleus.

A Chemist comes to you asking if you can help him find where the electron is in an atom?

What would you tell him?

Answer explanation

The electron is a negatively charged particle and exists outside the nucleus of the atom.

The Nucleus of the atom contains ------ and Neutrons

Why are the elements sorted into vertical groups?

• The elements in the group share similar properties

• There is no reason for it

• The elements have opposite properties

• The elements have similar names.

Answer explanation

Elements are sorted vertically in the periodic table as they have similar chemical properties.

For e.g Lithium and pottasium are both reactive metals that ignite when they touch water.

Protons have what charge?

Draw a diagram of an atom

Can you think of an element and how we can use it in our everyday lives?

For e.g Iron can be used to build and strenthen.