C1- Particles
- Created by: Rachelle
- Created on: 12-11-13 10:22
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- C1- Particles
- Element: A pure substance only containing one type of atom.
- Isotope: Atoms of the same element with different number of neutrons.
- Atom: Smallest particle of an element to be able to chemically react.
- Molecule: Group of atoms held together by covalent bonds
- Compound: 2+ types of atoms joined together
- Mixture: Different type of atoms, close but unjoined, and their identities are retained. (e.g. alloys, solutions, suspensions, colloids)
- Relative Atomic Mass (ar): Average mass of the isiotopes of an element vs. C12 atom.
- Changes
- Physical change
- reversible
- Chemical change
- irreversible
- heat involved
- new substance formed
- Physical change
- Atomic # = Proton #
- Atomic Mass # = Nucleon #
- Mass = molar mass x moles
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