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Download Chemistry Vocab for Quiz 12/21 or 12/22 Atom – The smallest
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Chemistry Vocab for Quiz 12/21 or 12/22 Atom – The smallest particle of an element. Atomic number - The number of protons in the nucleus of an element Atomic mass – The average mass of one atom of an element Proton – A small positively particle in the nucleus Neutron – a small particle in the nucleus with no charge Electron – A tiny negatively charge particle that moves around the nucleus of the atom Nucleus –The central core of the atom containing protons and usually neutrons Molecule – A combination of 2 or more atoms. Element – A substance that cannot be broken down into another substance by physical or chemical means. Compound – A substance made of 2 or elements chemically combined in a specific ratio. Chemical bond – the force that holds 2 atoms together. Mixture – Two or more substances that are mixed together but not chemically bound, Physical change – A change that alters the form or appearance of a material but does not make the material into a different substance. Chemical change – A change in matter that produces a new substance. Solution – A well mixed mixture. Solubility – A measure of how well a solute can be dissolved at a given temperature. Solvent – The part of the solution present in the largest amount and that dissolves other substances Solute - The part of the solution present in the lesser amount and that is dissolved by the solute. Saturated solution – A mixture that has so much solute in it that no more will dissolve. Valence electrons – The electrons that are farthest away from the nucleus of an atom and are involved in chemical reactions.