Chemistry (S.S.1)
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1 / 10
Which of the following is the smallest particle that has the properties of an element?
2 / 10
Which element has the chemical symbol "O"?
3 / 10
Which gas do plants absorb during photosynthesis?
4 / 10
What is the pH value of a neutral substance?
5 / 10
When an atom gains an electron, it becomes
6 / 10
Which gas is produced when a metal reacts with an acid?
7 / 10
What is the main component of natural gas?
8 / 10
What is the chemical symbol for iron?
9 / 10
What is the chemical formula for table salt?
10 / 10
What is the chemical formula for water?
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