Chemistry notes
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 | made of one kind of atom. It can't be broken down during a chemical reaction. It combines with other elements to form compounds.
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symbol | the abbreviation for the element. Always a capital letter, or a capital and a lower case.
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atomic mass | decimal number below the symbol.
It is the mass of the protons and neutrons in an element
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atomic number | located above the symbol
Tells the number of protons in the nucleus of an atom
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group | vertical column of elements on the periodic tables.
These element have similar properties.
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period | elements in a horizontal line on the periodic table. These elements all have the same number of electron levels (valence)
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mass number | number of protons and neutrons in the nucleus of an atom. It is the atomic mass rounded to the nearest whole number
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metals | usually shiny and can be formed into shapes (malleable). They are good conductors of electricity.
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nonmetals | most have the properties opposite of metals. Nonmetals are dull and cannot be shaped.
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semimetals | have some properties of both metals and nonmetals.Some semimetals are shiny but cannot be shaped.
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noble gases | elements that do not combine easily with other elements.
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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:
Kohng.20
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