Question

I2) Fill in the blanks: 1 × 6 = 6

(1) Tchemical substances can be divided into _________ and __________ .

(2) Among the discovered elements ________ elements are found in nature.

(3) Properties of compounds are ___________ from its constituent elements.

(4) Chemical symbol of mercury is __________ .

(5) An abbreviation used to represent an element is called _________ .

3) Answer the following questions: 2 × 2 = 4

(1) Give two differences between compounds and mixtures.

(2) Give definition of atoms and elements.​

Answer 1

Answer:

2-carbon,4-hg is the symbol of mercury