Question

Which of these is NOT a mixture?
A)
baking soda
B)
salt and water
C)
iron filings and sand
D)
metal paper clips and plastic paper clips

Answer 1

I think it would be baking soda because it's by it's self all the other options are more than one thing and they are different take the paper clips they're two different types of paper clips an they are together so it would be a mixture of different things