AQA GCSE CHEM C1 Atomic Structure & Periodic table MCQs

Which element has an atomic number of 16?

• selenium

• silicon

• sodium

• sulfur

Which subatomic particle has a negative charge?

• atom

• electron

• neutron

• proton

Which element has a relative atomic mass of 56?

• iron

• iodine

• iridium

• tin

How many protons are there in an atom of sodium?

• 11

• 12

• 23

• 34

Which model of the atom is described as a ball of positive charge with negative electrons embedded in it?

• planetary model

• solid sphere model

• nuclear model

• plum pudding model

What is the balanced symbol equation for the reaction between magnesium and oxygen?

• Mg + O => MgO

• Mg + O2 ==> 2MgO

• Mg + O2 ==> MgO2

• 2Mg + O2 ==> 2MgO

What is a solvent?

• A homogenous mixture formed when a solute dissolves in a solvent.

• The substance that dissolves in a liquid to make a solution.

• The substance in which a solute dissolves.

• A substance that will dissolve in a given liquid.

What is the electronic structure of an atom of nitrogen?

• 2, 2, 3

• 2, 5

• 2, 8, 4

• 2, 2, 8, 2

Lithium exists naturally as two isotopes, 6Li and 7Li. The abundance of 6Li is 8% and the abundance of 7Li is 92%. What is the relative atomic mass of lithium to 3 significant figures?

• 6.08

• 6.92

• 7.00

• 7.78

Which statement describes the trend in reactivity of the Group 7 elements?

• all the elements are equally reactive

• the reactivity of the elements decreases as you move down the group

• the elements of this group are unreactive

• the reactivity of the elements increases as you move down the group