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ChemKRMS123
Question | Answer |
---|---|
Molecules | 2 atoms combined |
Atom | Smallest particle of an element |
Element | A pure substance that can't be broken |
Protons and neutrons | inside an atom- holds it together |
Compound | 2 or more elements that are chemically combined |
Chemistry | Study of matter, its properties and how it changes |
Boiling point | The temperature at which a liquid changes to a gas |
Melting point | The temperature at which a solid changes to a liquid |
Physical change | To alter the form of a substance, but not its identity |
Chemical change | When substances combine or break apart to form new substances |
Mixtures | 2 or more substances that are in the same place but not chemically combined |
Pure substances | Are made of only one kind of matter and has definate properties |
Metalloids | Has metal and non-metal properties |
Matter | What makes up everything in the universe |