Atom and Periodic Words
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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| atom | the smallest particle into which an element can be divided and still retain all of that element.
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| electron | the negatively charged particles found in all atoms.
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| protons | the positively charged particles of the nucleus.
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| neutrons | the particles of the nucleus that have no charge.
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| isotope | atoms that have the same number of protons but a different number of neutrons.
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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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| mixture | a combination of two or more substances that are chemically combined.
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| periodic | having a regular, repeating pattern
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| Periodic Law | a law that states 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.
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| atomic mass | the weighted average of the masses of all the naturally occuring isotopes of an element.
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| Valence Electrons | the electrons in the outermost energy level of an atom.
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| Halogens | elements found in group 17 of periodic table.
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| Noble gases | stable, inert elements found in group 18 of periodic table.
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| Ernest Rutherford | positive charged nucleus, atom mostly empty space electrons travel around nucleus.
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| Nils Bohr | used the planetary model to describe the atom.
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| Democritus | first to come up with the idea of an atom.
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| Dimitri Mendeleev | Father of Periodic Table, arranged elements from atomic mass.
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| Groups | Vertical columns on periodic table composed of similar elements with similar charges.
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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:
mpelesasa
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