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Atomic Theroy
The Study of Atoms
Term | Definition |
---|---|
Element | Pure substances make of only 1 atom |
Atom | Smallest particle that makes up matter |
Melting | Change of matter Solid to liquid. |
Evaparation | `Change of matter from a liquid to a gas |
Condensation | property of metals=rusting |
Frezzing | change of a matter from a liquid state to a solid state |
Sublimation | the process by which a solid changes directly into a gas |
Deposition | the process by which a gas changes into a solid. |
Protons | a positively charged elementary particle |
Malleable | able to be hammered or pressed permanently out of shape without breaking or cracking |
Atomic Number | is the number of protons found in the nucleus of an atom |
Density | amount of matter in a certain space. |
Metalliods | an element whose properties are intermediate between those of metals and solid nonmetals. |
Electrons | a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids. |
Metals | a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity. |
Lusture | describes the way a mineral reflects lights from its surface. |
Neutrons | a subatomic particle of about the same mass as a proton but without an electric charge |
Chemical Symbol | an abbreviation for the name of an element |
Ductile | able to be drawn out into a thin wire. |
Corrosive | tending to cause corrosion. |
Atomic Mass | the mass of an atom of a chemical element expressed in atomic mass units. |
Non-Metals | group that are poor conductors of heat and electricity and are brittle. |
Atoms | the basic unit of a chemical element. |
Element | each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. |
Compound | a thing that is composed of two or more separate elements; a mixture. |
Valence Electrons | is an outer shell electron that is associated with an atom, |
Mixture | any substance that has a uniform and unchanging composition is considered to be pure |