AQA GCSE Chemistry Trilogy Periodic Table

How are elements arranged in the modern 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 arrangement of oxygen is:

• 2,4

• 2,6

• 1,2,4

• 2,8

Mendeleev’s Periodic Table was revolutionary because (CHOOSE 2):

• He ordered elements by both their properties and their proton number

• He left gaps for undiscovered elements.

• He swapped some elements so they fit into a group with similar properties

What group are the Alkali 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 (CHOOSE 2):

• 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 (CHOOSE 2).

• Soft

• Brittle

• Dense

• Have relatively low melting points

When lithium reacts with water, the following observations are true (CHOOSE 2):

• Metal sinks.

• Effervescence is seen.

• Burns with a lilac flame.

• Floats on the surface of the water.

When potassium reacts with water, the following observations are true (CHOOSE 2):

• Melts into a ball and fizzes

• It sinks

• Burns with a lilac flame and floats

• It doesn't react