Question

Which sample of matter can be separated into different substances by physical means?
(1) LiCl(aq) (3) NH3(g)
(2) LiCl(s) (4) NH3(l)

Answer 1

Answer:

(1) LiCl(aq)

Explanation:

Question:

Which sample of matter can be separated into different substances by physical means?

1.      LiCl(aq) ✔

2.     LiCl(s) ❌

3.     NH₃(g) ❌

4.     NH₃(ℓ) ❌

Reason:

LiCl(a) is a mixture of a compound and water. The LiCl can be separated from the water. All the other choices are compounds.

Related Vocabulary:

- Aqueous: a water solution , indicated by the notion "(aq)". For example, HCl(aq) indicated a water solution of hydrochloric acid.

- Matter: Anything that has mass and takes up space.