Question

Which of the following is a pure substance? Pure gold, pure milk, pure water, pure seawater, pure sand. And how do you know?

Answer 1

Well, rule some out. Which ones do you know aren't? That is, if you do know any of them aren't.

Answer 2

Hello?

Answer 3

Well sand is obviously not..right?

Answer 4

Sorry..

Answer 5

It's fine, and no it isn't. Anything else?

Answer 6

What do they mean by pure substance here?

Answer 7

I mean like how can I know?

Answer 8

What they mean by Pure substance, is something that can't be split into different things.

An example is.. The tree, it has leafs, wood, and so on.