chemistry higher gcse
What is the atomic number of oxygen?
8
Which element is a halogen?
Chlorine
What is the formula for sulfuric acid?
H2SO4
Which gas is produced during photosynthesis?
Oxygen
What is Avogadro's number?
6.02 x 10^23
What is the process called when a solid turns directly into a gas?
Sublimation
What is the chemical symbol for gold?
Au
Which gas is responsible for the greenhouse effect?
Carbon dioxide
What is the pH scale used to measure?
Acidity or alkalinity
Which metal is a good conductor of electricity?
Silver