Question

1. Which of the following is an example of a
mixture?
A. oxygen gas

B. sodium chloride

c. ammonia

D. salt water

2. Which of the following is a pure substance?
A. a rod of steel

B. a strap of leather

C. a cube of sugar

D. a puddle of milk

E. a block of wood

3. Which is a pure chemical compound?
A. ammonia

B. gasoline

C. wood

D. beer

Answer 1

1.salt water is an homogeneous mixture
answer is D


2.a cube of sugar is best for pure substance
answer will be C


3.ammonia is an pure chemical compound
answer will be A