Question

.

Answer 1

do u know powdered chalk chemical composition ?

Answer 2

yaa :)

Answer 3

it react with NaOH to form Sodium carbonate and Calcium hydroxide

Answer 4

yup:)

Answer 5

CaCo3 (chalk) + vegetable oil = physical reaction ( no chemical reaction :)

Answer 6

:) i cant give u direct answer :) i will just give u hint :) u have try for the answer ok :)

Answer 7

vegetable oil will be having high boiling point :) i don't know how much u heat ?

Answer 8

fan ? lol nope u cant evaporate vegetable oil just by the fan :)

Answer 9

yaa u can boil :) the oil boiling point is around 250 °C based on the oil u use :) and CaCO3 decomposes at 800°C :) hence i f u boil it at 300 °C for some time u can evaporate the oil and chalk remain in ur vessel/beaker

Answer 10

yaaa :)

Answer 11

yup:)

Answer 12

yaaa

Answer 13

salt is neutral material if u add to anything it wont react most of the time :)

Answer 14

yup

Answer 15

yup :)

Answer 16

NaOH + KCl -> NaCl + KOH .

Answer 17

but for NaCl (salt) + NaOH (sodium hydroxide) = its physical mixture

Answer 18

not really bcoz both are Na only So :)

Answer 19

it will react but the no result of reaction :)it remains the same :)