Question

25 l.e. elements and compounds
with the following activity.
S:
sulp!
finite set of
melting point,
eneous i.e.
ughout the
ds are pure
Activity 2
US
substances
substances
ney do not
es. They
bstances.
Following are the symbols and formulae
for some of the elements and compounds.
Na, H2, CO2, NH3, O2, Fe, He, HCI, N
H2O, Fes, Cl2.
Separate them as elements and
compounds and give their names.
What conclusion do you make on the basis
of the above activity ?
oo
sm
sed
SUBSTANCES​

Answer 1

Answer:

elements

• Na is sodium
• H2 is hydrogen
• O2 is oxygen
• Fe is iron
• He is helium
• N is nitrogen
• Cl2 is chlorine

compounds

• CO2 is carbon dioxide
• NH3 is amonnia
• HCl is hydrochloric acid
• H2O is water
• FeS is iron sulphide

Explanation:

The conclusion that was made by the activity was that elements are pure substance that make the compound