atoms, elements, compounds

Match it! Select the correct answer from the pull down...Good luck!

which of these is a compound

sugar is composed of carbon, hydrogen, and oxygen...this is an example of

when copper and iron chemically unite, they form

how can I separate salt water

iron oxide, also known as rust, is formed when iron chemically combines with oxygen. element

chemical symbol for sodium chloride

How many elements are in the compound MgOH2?

what substance is a compound