Question

5.
TV. Long answer type questions
SOBSERVE
1. Explain the process used for removing impurities from common salt
Write the word equation
2. Represent the following using chemical symbols/formulae.
a. Two atoms of the element neon
b. A molecule of the element nitrogen
C A molecule of the compound carbon dioxide
d. Three molecules of the compound water
e. Four molecules of the compound magnesium oxide
3. Balance the following equations.
a. H, +0,H0
b. N + H2NH,
C. KCIO, - KCI +
d. HCI + Mg(OH), -> MgCl, + H,0
е. К+но — кон + Н.
Iron filings and sulphur
4. Complete the following word equations. Give their balanced chemical equation
them? Draw it in the spa
a. magnesium + oxygen->
b. iron + oxygen + water-
c vinegar + baking soda-
+ sodium ac
d. carbon dioxide + lime water-
e copper sulphate + iron-
a.
64 Chemicals and Chemical Changes​

Answer 1

Answer:

WHY VIRUSES ARE KEPT ON THE BORDERLINE OF LIVING AND NON LIVING?

Answer 2

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities. ... Most plants, algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs.