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what is an isotope?
an atom that has the same # of protons and a different # of neutrons.
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what was Rutherford famous for?
He discovered the nucleus and made the Alpha Perticle Scatter Model. He discovered that the nucleus is dense.
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what is JJ Thomson famous for?
He discovered the electron. and made the Cathode Ray Tube Model
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what are some examples of Physical Properties?
odor, color, volume, state.
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What are some examples of Chemical Properties?
rust, digestion, burning wood.
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what is a compound?
A substance that has the same composition that can be broken down into elements by chemical means (H2O)
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what is an element?
Cant be broken down into substances by chemical means.
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what is a mixture?
something that has a variable compositons (coffee can be bitter and sweet, and trees can be many colors)
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what is a bohr model?
a model of the hydrogen atom
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who is Dalton?
he created the atom theory(the law of constant sompisition)
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who is Schrodenger?
he made the wave mechanical model of the atom.
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the names: periodical table: group 1, Group 2, Group 3-12, Group 17, Group 18:
- 1-akali metals
- 2-akaline earth metals
- 3-12- transition metals
- 17-halogens
- 18-noble gas
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know the electron configuration:
1s 2s 3s 3p 4s 3d 4p 5s 4d 5p 6s 5d 6p
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