8/9/2019 Chemistry 10th

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Chemistry 10th

1. Write the type of reactions in the following:

i. Reaction between an acid and a base

ii. Rusting of iron

2. Give the names of the functional groups.

i. C!

ii. C " !

iii.

#. $raw the structure of %utanone molecule& C#C!C2'.

(. ow does the metallic character of elements change along a period of the

periodic table from the left to the right and why)

'. *n the modern periodic table& the element calcium +atomic number " 2,- is

surrounded by elements with atomic numbers 12& 1& 21 and #/. Which of

these elements has physical and chemical properties resembling those of

calcium and why)

0. Write chemical euations to show what happens when:

i. thanol is heated with concentrated sulphuric acid at ((# 3.

ii. thanol reacts with ethanoic acid in the presence of an acid acting as a

catalyst.

iii. 4n ester reacts with a base.

5. 6he atomic number of an element is 10. 7redict

i. the number of valence electrons in its atom

ii. its valency

iii. its group number

iv. whether it is a metal or a non8metal

v. the nature of o9ide formed by it

vi. the formula of its chloride

/. 9plain the mechanism of the cleaning action of soaps

9. 9plain isomerism. tate any four characteristics of isomers. $raw the

structures of possible isomers of butane& C(1,.