Vocabulary from the chemistry unit
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 | Building blocks of matter; made up of protons, neutrons, and electrons
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| Proton | Positive charge; found in nucleus
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| Neutron | No charge; found in nucleus
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| Electron | Negative charge; found in energy levels around the nucleus
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| Atomic Mass | Equal to the number of protons and neutrons in an atom
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| Atomic Number | The number of protons (+) and electrons (-) in an atom
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| Bohr Diagram | Shows all electrons in an atom using a "bulls-eye" diagram
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| Family | A group or column in the periodic table; such as Alkali Metals or Halogens
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| Energy level | Surround the nucleus; contains electrons
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| Leptons | A subatomic particle such as an electron
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| Isotope | Atoms of the same element with different numbers of neutrons; such as C-12, C-13, & C-14
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| Metal | Elements found on the left-side of the periodic table; good conductors of heat and electricity
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| Metalloid | An element whose properties are intermediate between those of metals and solid nonmetals
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| Nonmetal | Elements found on the right side of the periodic table that are poor conductors of electricity and heat
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| Lewis Structure | Shows the number of valence electrons in an atom; also called electron-dot diagram
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| Quark | Makes up protons and neutrons; connected by gluons
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| Period | Rows in the periodic table; have the same number of energy levels
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| Nucleus | Center of an atom that contains protons and neutrons
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| Periodic Table | Chart that shows the periodic properties of the elements; elements arranged by increasing atomic number
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| Valence | Electrons found in the outermost energy level
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| Chemical Symbol | Letter or letters that represent an element, such as H or He
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| Compound | Two or more substances that are chemically combined, such as H20 (water) and NaCl (salt)
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| Mixture | Two or more substances that are not chemically combined, such as milk or lemonade
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| Matter | Anything that has mass and volume
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| Chemical Property | Used to describe how a substance will react with other substances
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| Physical Property | Used to describe the physical characteristics of matter, such as size, shape, color, texture, conductivity, phase
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| Chemical Change | Also called a chemical reaction; results in the creation of a new substance
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| Physical Change | Change in size, shape, state, or other physical property of a substance; still the same substance after the change
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| Monomers | Molecules that are linked together to make a polymer; such as amino acids in proteins
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| Polymer | Made up of monomers; such as DNA, proteins, and cotton
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| Petrochemicals | Chemicals made from petroleum; used to make synthetic polymers (plastics)
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| Ion | An atom that has lost or gained electrons
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| Ionic Bond | Bond between a metal and a nonmetal that involves a transfer of electrons
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| Covalent Bond | Bond between two nonmetals that involves the sharing of electrons
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| Reactants | Substances that enter into a chemical reaction; appear before the arrow
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| Products | Substances that are produced during a chemical reaction; appear after the arrow
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| Conservation of Mass | Law that states that matter cannot be created or destroyed during a chemical reaction
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| Oxidation Number | The number of electrons an atom may lose or gain, such as 1+ or 1-
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| Chemical Equations | Represent chemical reactions, such as 2Mg + O2 --> 2MgO
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| Chemical Formulas | Represent chemical compounds, such as H2O or MgO
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To hide a column, click on the column name.
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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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