Science Chapter 4 (=
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| the smallest particle in which an element can be divided and still be the same substance | atom
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| believed all matter consisted of extremely small particles that could not be divided | Democritus
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| Said that all substances came from the four elements water, fire, air, earth. | Aristotle
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| Had the first atomic theory. Proposed a theory that all elements are composed of atoms. | Dalton
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| Elements that the same atomic number but different mass numbers | isotope
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| equals the number of protons | atomic number
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| the sum of protons and neutrons in the nucleus of an atom | mass number
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| conducted the cathode ray tube experiment | Thomson
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| Conducted the gold foil experiment | Rutherford
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| A positively charged subatomic particle. | Proton
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| Negatively charged subatomic particle | Electron
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| A neutral subatomic particle found in the nucleus | Neutron
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| mass number-atomic number=? | number of neutrons
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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