Lab Aids Chemistry 2.2V

A neutral group of atoms that are covalently bonded together.

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NGSS.MS-PS1-1

A combination of element symbols and subscripts that tell you the ratio of elements in a compound.  For example, H₂O is the ??? for water and tells you there are 2 hydrogen (H) atoms for every 1 oxygen (O) atom.

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NGSS.MS-PS1-1

An atom or small molecule with an overall + or - charge due to an imbalance of protons and electrons which results from the loss or gain of 1 or more electrons.

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NGSS.MS-PS1-1

A compound in which + and - ions attract each other to keep matter together.  Salt (NaCl) is a good example.

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NGSS.MS-PS1-1

A substance containing 2 or more elements in which the atoms of different elements are chemically bonded together.

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NGSS.MS-PS1-1

A model showing all the individual chemical bonds and how all the atoms in a molecule of a substance are connected together; single lines are used for single covalent bonds, double lines are used for double covalent bonds, etc.

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NGSS.MS-PS1-1

A model used to demonstrate how atoms in a substance, when chemically bonded together, overlap each other.

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NGSS.MS-PS1-1

The mass of 1 mole of a compound with a given chemical formula.

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NGSS.HS-PS1-7