Year 10 Chemical World Revision

What sub atomic particle orbits around the nucleus?

• Proton

• Atom

• Neutron

• Electron

Which of the following is correct?

• Proton = positive, neutron = negative, electron = neutral

• Proton = positive, neutron = neutral, electron = negative

• electron = positive, neutron = neutral, proton = negative

• neutron = negative, proton = neutral, electron = positive

A Ph reading of 3 would be a ______

The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.

• True

• False

Select the following elements that are in the same group.

• lead

• zinc

• iodine

• copper

The following is an example of what type of bond?

What is the total number of atoms present in the formula H₂SO_{4 ?}

• 6

• 7

• 8

• 9

What element is K?

• Chromium

• Krypton

• Sodium

• Potassium

What is the symbol for iron?

• Fe

• I

• Ir

• In

What type of reaction occurs when you react an acid with an alkali?

• combustion

• decomposition

• neutralisation

• precipitation