Question

which of the following is a mixture? a) Air b) Table salt c) Chalk powder d) Washing soda​

Answer 1

Answer:

a) Air

Explanation:

hope it is useful for you

(sorry if it was a wrong answer)

Answer 2

@ we can say a) air

Explanation:

a) Air does not have a formula like a mixture, while compounds have a fixed formula. When air is formed by gases, there is no energy change.

b) Table salt is a mixture because it contains additives to prevent clumping, as well as various supplements to improve health. Substances commonly found in table salt include not only sodium chloride (NaCl) but sodium ferrocyanide (Na4Fe(CN)6) and potassium iodide (KI)

c) Mixture of chalk powder in water is a heterogeneous mixture because Chalk powder and water do not mix and hence form two separate layers.It means they have visible boundaries of separation.

d) washing soda : it is a compound of sodium.