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Chem Unit Stack
Chemistry
Question | Answer |
---|---|
what is a molecule? | the simplest structural unit of an element or compound. |
what is matter? | Matter is everything. |
what is a boiling point? | The temperature at which a liquid changes to a gas. |
what is melting pointing? | The temperature at which a solid changes to a liquid. |
what is an element? | any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination constitute all matter. |
what is a compound? | a pure substance of two or more elements. |
What is inside an atom? | Nucleus, Protons, Neutrons. |
What is an atomic mass? | total number of protons and neutrons in the nucleus of the atom. |