Question

Which of the following is a pure substance? Choose all that apply.
Fruit juice?
nickel?
saltwater?
rust? (Fe2O3)

Answer 1

@Isaiah.Feynman

Answer 2

Pure...what does that mean to you?

Answer 3

Most likely a liquid or gas? @Isaiah.Feynman

Answer 4

No. If something is made of only one type of substance then its pure.

Answer 5

So saltwater would be one, right? @Isaiah.Feynman

Answer 6

Salt + water. Two different things.

Answer 7

Oh, well I am not sure about nickel or rust, but I am pretty sure fruit juice isn't one either then. @Isaiah.Feynman

Answer 8

Rust is iron + oxygen. Nickel is the pure substance there. Look at the definition I gave!

Answer 9

I think nickel is the only one then? @Isaiah.Feynman

Answer 10

I just said that. Yes.