Question

Which of these are compounds?

A. N2O
B. He
C. CH4
D. H2O2
E. Si
F. H2

Answer 1

The compounds among the given options are N2O, CH4, and H2O2.

Step-by-step explanation:

Compounds are substances that are made up of two or more elements bonded together. They have a fixed composition and can be represented by a chemical formula. Based on the given options:

1. A. N2O - This is a compound with the formula for Nitrous oxide.
2. B. He - Helium is an element, not a compound. It exists as individual atoms.
3. C. CH4 - This is a compound known as methane.
4. D. H2O2 - This is a compound called hydrogen peroxide.
5. E. Si - Silicon is an element, not a compound. It exists as individual atoms.
6. F. H2 - Hydrogen is an element, not a compound. It exists as individual atoms.

Therefore, the compounds among the given options are A, C, and D.