Question

Identify if these are element or compound SiO2 , H2 , H2O ,NaCl ,O2

Answer 1

Answer:

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Answer 2

Answer:

some of them are compound and elements

Explanation:

SiO2 (Silica/Silicon dioxide) : compound

H2O (water/hydroxide) : compound

NaCl (commen salt/Sodium chloride) : compound

O2(oxygen) : element

H2 (hydrogen) : element