Science
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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Element | A pure substance that cannot be seperated or broken down into simpler substances by physical or chemical means
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Compound | a pure substance composed of two or more elements that are chemically combined
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Minture | a combination of two or more substances that are not chemically combined
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Atom | the smallest particle into which an element can be divided and still retain all of the properties of that element
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proton | the positivley charged perticles of the nucleus the number of protons in a nucleus is the atomic number, which determines the identy of an element
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electron | the negativley charged perticles found in all atoms; electons are involved in the formation of chemical bonds
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neutron | the perticles of the nucleus that have no charge
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periodic | having a regular, repeating pattern
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periodic law | a law that states that the chemical and physical properties of elements are periodic functions of their atomic numbers
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atomic number | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element
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atomic mass | the weighted average of the masses of all the naturally occurring isotopes of an element
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isotope | atoms that have the same number of protons ut have different numbers of neutrons
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valence electron | the electrons in the outermost enerty leven of an atom; thses electrons are involved in forming chemical bonds
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John Dalton | Atomic Theory
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J.J. Thomson | small perticles in an atom
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Ernest Rutherfor | positive charged nucleus. atom mostly empty space electrons travel around nucleus
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Niels Bohr | electons travel in clouds
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Democritus | 1st to come up wth the idea of atom
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Dmitri Mendeleev | Father of Periodic Table, arrange elements by atomic mass
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Henry Moseley | rearranged periodic table by atomic number
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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.
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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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Created by:
Ashleylovessoccer
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