An atom is represent by a ball
Atoms of different elements are coloured differently.
When atoms are joined, it means by they are chemically bonded.
Please help me with this last question
Use these information to answer the following questions
Question
(a) Which letters represent pure substances
(b) which letters represent impure substances
Answers
Answered by
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Answer:
heya m8! this ur answer.
Explanation:
a)Air (consists of oxygen, nitrogen, hydrogen, water vapour) Hydrogen gas (H2) Neon gas.
b) Fe(iron), Sc(scandium) or any other substance other than noble gases
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