Year 10 Chemistry – Revision Practice Sheet

The atomic number of an element tells you:

• The number of neutrons

• The number of protons

• The number of electrons and neutrons

• The atomic mass

Which of the following describes a group on the periodic table?

• A row

• A type of bond

• A vertical column

• An energy level

Which element is most reactive in Group 1?

• Lithium

• Sodium

• Potassium

• Francium

What happens to the rate of a chemical reaction when the temperature increases?

• It decreases

• It stays the same

• It increases

• It stops

In a neutralisation reaction, the two main products are:

• Acid and base

• Salt and gas

• Water and salt

• Base and hydrogen

Valency is defined as:

• The number of electrons in the outermost shell

• The ability of an atom to combine with other atoms

• The number of protons in an atom

• The mass of an atom

An atom is:

• The smallest unit of matter that retains the properties of an element.

• A large molecule made of many elements.

• A type of chemical reaction.

• A form of energy.

The word equation for a chemical reaction between calcium and chlorine is:

• Calcium + Chlorine → Calcium chloride

• Calcium + Oxygen → Calcium oxide

• Calcium + Sulfur → Calcium sulfide

• Calcium + Nitrogen → Calcium nitride

4. Use the periodic table to explain how you can determine: a) The number of electron shells is equal to:

• The group number

• The period number

• The atomic number

• The mass number

The number of valence electrons in an element can be determined from the periodic table by:

• Looking at the group number for main group elements

• Looking at the period number

• Counting the total number of electrons

• Checking the atomic mass