The 25 Most Common Elements
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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| Hydrogen | H
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| Lithium | Li
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| Boron | B
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| Nitrogen | N
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| Fluorine | F
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| Sodium | Na
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| Aluminum | Al
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| Phosphorus | P
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| Chlorine | Cl
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| Potassium | K
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| Gold | Au
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| Copper | Cu
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| Mercury | Hg
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| Helium | He
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| Beryllium | Be
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| Carbon | C
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| Oxygen | O
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| Neon | Ne
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| Magnesium | Mg
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| Silicon | Si
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| Sulfur | S
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| Argon | Ar
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| Calcium | Ca
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| Silver | Ag
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| Krypton | Kr
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| What is a chemical symbol? | A one or two-letter representation of an element (Si, Ar, Mg, etc.)
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| What is a group? | Elements in the same vertical column of the periodic table (Same thing as a family)
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| What is a family? | Elements in the same vertical column of the periodic table (Same thing as a group)
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| What is a period? | A horizontal row of elements in the periodic table.
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| What is a valence electron? | One of the furthest electrons from the center of the nucleus, the ones in the outer shell.
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| What is a proton? | A small, positively charged particle in the nucleus of an atom.
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| What is an electron? | A small, negatively charged particle in the nucleus of an atom.
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| What is a neutron? | A small particle with no charge in the nucleus of an atom.
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| What is AMU? | Atomic Mass Unit - A unit used to measure the mass of particles in atoms.
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| What is an atomic number? | The number of protons in the nucleus of an atom.
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| What is the periodic table? | A chart of elements.
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| What is atomic mass? | The average mass of an atom.
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| The number of ______ and ______ in an element are equal. | Protons and electrons.
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| To find Atomic Mass : | Subtract the number of neutrons from the number of protons.
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| To find the number of neutrons : | Subtract the Atomic Number from the Atomic Mass. (Round the atomic mass to the nearest whole number)/
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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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