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Matter Unit (6.P.2) (6.P.2.1) Atoms: Recognize that all matter is made up of atoms and atoms of the same element are alike, but are different from the atoms of other elements.
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Structure of Atom Nucleus – center part of an atom
Proton – found inside the nucleus and has a positive charge electrical charge (+) Neutron – found inside the nucleus and has no electrical charge Electron – movies around the nucleus and has a negative electrical charge (-)
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Atom An atom consists of a nucleus (containing one or more protons and zero or more neutrons) and some number of electrons. Atoms have the same number of protons and electrons, because otherwise, you would have an ion.
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Molecule A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
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Atom or Molecule? A molecule consists of two or more atoms bonded together. Atoms are single units of elements.
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Element An element is a basic substance made of a single type of atom. Hydrogen, oxygen, carbon, and gold are all elements
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Atom or Element The difference between atoms and elements is that elements are made of elements. To be an element, only one type of atom can be present. All elements are in the periodic table of elements.
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Atoms create Elements & Molecules
Molecules are chemical combinations of two of more atoms. Hydrogen and Oxygen can combine to make a molecule of water
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Element Groups These are based on: Boiling point
melting/freezing point Hardness, color, texture State at room temperature Density solubility
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Metal Elements Further grouped based on: Luster Malleability
Conductivity of electricity & heat Attraction to magnet
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How do you read an element shown on the periodic table?
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Putting it all together!
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Bill Nye: Atoms and Molecules
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