Stogs GCSE Interleaving Periodic Table L

How are elements arranged in the Periodic Table?

• In rows called columns, by increasing mass number.

• In rows called periods, by increasing mass number.

• In rows called columns, by increasing atomic number.

• In rows called periods, by increasing atomic number.

The electronic configuration of oxygen is:

• 2.4

• 2.6

• 1.2.4

• 2.8

Mendeleev’s Periodic Table was revolutionary because:

• He ordered elements by both their properties and their atomic number.

• He left gaps for undiscovered elements.

• He used his Periodic Table to make predictions about undiscovered elements.

• He ordered elements by both their properties and their atomic mass.

What group are the Alkali Metals in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Alkali Earth Metals in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Halogens in?

• Group 1

• Group 2

• Group 7

• Group 0

What group are the Noble Gases in?

• Group 1

• Group 2

• Group 7

• Group 0

Elements in the same group in the Periodic Table have:

• Similar reactivity

• The same melting and boiling points

• The same number of outer shell electrons

• The same mass

Select the correct physical properties of the alkali metals from the list below.

• Soft

• Brittle

• Dense

• Have relatively low melting points

When lithium reacts with water, the following observations are true:

• Melts into a ball.

• Effervescence is seen.

• Burns with a lilac flame.

• Floats on the surface of the water.