Which one of the following is a solution?
Question 21 options:
oxygen
salt water
sugar
chocolate chip cookies
Which of the following is a compound?
sugar
chocolate chip cookies
oxygen
salt water
Why is water considered a pure substance and not a mixture?
Question 23 options:
Water can be separated physically into hydrogen and oxygen.
Water is clear.
Water can be separated chemically into hydrogen and oxygen.
Water is not a pure substance. It is a mixture.
How can a mixture of pigments be separated?
Question 24 options:
filtration
crystallization
magnetic attraction
chromatography
