Question

Which of the following are elements? There may be more than one correct answer.

a
Carbon
b
Nitrogen
c
Steel
d
Fluorine

Question 2 (1 point)
Which of the following are elements? There may be more than one correct answer.

a
Helium
b
Water
c
Oxygen
d
Air

Answer 1

Answer:

1=> carbon , nitrogen , fluorine

2=> Helium , oxygen

Explanation:

hope it helps you

Answer 2

Q.1. a) Carbon, b) Nitrogen, d) Fluorine are elements here as they have they have their symbols, C, N and F respectively. But steel is not an element, it is an alloy. That is, a mixture of more than 1 elements.

Q.2. a) Helium (He), c) Oxygen (O) are the name o the elements here. Water is a compound, i.e., when atoms mix in proper ratio by mass is said to be a compound. And, air is an Heterogeneous mixture of many molecules ofelements and compounds like, N Ar, O, CO2, H2O, etc.