gcse chemistry
What is the atomic number of carbon?
6
Which element has the symbol Mg?
Magnesium
What is the formula for hydrochloric acid?
HCl
Which gas is released in the process of photosynthesis?
Oxygen
What is the boiling point of water?
100°C
Which of the following is a greenhouse gas?
Carbon dioxide
What is the pH value of a neutral substance?
7
Which element is present in all organic compounds?
Carbon
What is the chemical symbol for gold?
Au
Which of the following is a non-metal?
Chlorine