Pre-IGCSE Chemistry Test Exam

What is the chemical symbol for oxygen?

• O

• Ox

• O2

• Oz

Which state of matter has a definite shape and volume?

• Solid

• Liquid

• Gas

• Plasma

Which of the following is a mixture?

• Water (H2O)

• Carbon dioxide (CO2)

• Air

• Sodium chloride (NaCl)

What is the relative charge of an electron?

• +1

• -1

• 0

• +2

What is the pH range of an acidic solution?

• 0-7

• 7-14

• 7

• 14-21

Which of the following is a metalloid?

• Sodium

• Silicon

• Chlorine

• Neon

Which particle in the atom has no charge?

• Proton

• Neutron

• Electron

• Positron

What is the atomic number of hydrogen?

• 1

• 2

• 3

• 4

Which element is in Group 1 of the Periodic Table?

• Helium

• Calcium

• Lithium

• Oxygen

What is the chemical formula for methane?

• CH4

• C2H6

• CO2

• CH3