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10 questions from this quiz
Pure substance, only one type of atom
Fe (iron)
2 hydrogen atoms + 1 oxygen atom
Completely different properties
Substances not chemically combined
Air (nitrogen, oxygen, carbon dioxide)
Mixtures are usually easy to separate
Forms black iron sulfide (FeSFeSFeS) compound
Sodium (from Latin 'natrium')
Different types of atoms bonded together
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