Chemistry

Question 1

Functional group

Answer 1

Atom or group of atoms

That form the centre of chemical activity in a molecule

Question 2

Hydrocarbon

Answer 2

Compound

Containing carbon and hydrogen atoms

Question 3

Homologous series

Answer 3

A series of similar compounds
Same functional group and same general formula
Each member differs from previous by a single CH2 unit

Question 4

Saturated

Answer 4

All bonds between carbon are single

Question 5

Unsaturated

Answer 5

Atleast one double or triple bond

Question 6

Isomers

Answer 6

Compound have sane molecular formula but different structural formulae

Question 7

Intramolecular bond

Answer 7

Occur between atoms WITHIN a molecule

Question 8

Covalent bond

Answer 8

Sharing atleast one pair of electrons

Question 9

Non- polar covalent

Answer 9

Equal sharing of electrons

Question 10

Polar covalent

Answer 10

Unequal sharing of electrons

Leading to a dipole forming

Question 11

Ionic bond

Answer 11

Transfer of electrons

Question 12

Metallic bond

Answer 12

Occur between positive kernel and sea of delocalized electrons

Question 13

Intermolecular force

Answer 13

Weak force of attraction between molecules or atoms of noble gases

Question 14

Exothermic

Answer 14

Reactions transform chemical energy into thermal energy

Question 15

Endothermic

Answer 15

Transform thermal energy into chemical potential energy

Question 16

Activation energy

Answer 16

Minimum energy required to start a chemical reaction

Question 17

Catalyst

Answer 17

Substance increases rate of reaction

But remains unchanged at the end

Question 18

Molar mass

Answer 18

Mass in grams of one mole of that substance

Question 19

Concentration

Answer 19

Number of moles of solute per unit volume of solution

Question 20

Yield

Answer 20

Measure of extent of a reaction

Measured by comparing amt of product against the amt of product that is possible