Unit 4 vocabulary
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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| Atomic Mass | average mass of one atom of an element
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| Periodic Table | a chart where elements are organized into periods and groups according to their properties
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| Chemical Symbol | one-or-two-letter code that stands or an element; Many symbols are abbreviations are the element's name
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| Period | a row of elements in the periodic table arranged by atomic number
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| Group | column of elements in the periodic table, in which elements have certain properties in common
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| Matter | the material that all objects and substances are made of
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| Element | substances that are the building blocks of all matter
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| Compound | matter made of 2 or more elements
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| Atom | smallest particle into which an element can be divided and still have the properties of that element
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| Electron | negatively charged particle found outside the nucleus of an atom
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| Nucleus | center of an atom, made up of protons and neutrons
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| Proton | positively charged particle located in the nucleus of an atom
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| Neutron | in an atom, particle with a neutral charge; located in the nucleus
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| Energy Level | the amount of energy carried by an electron in an atom
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| Isotope | atoms of the same element with different numbers of neutrons in the nucleus, and thus different atomic masses
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| Mass Number | the integer nearest in value to the atomic weight of an atom and equal to the number nucleons in the nucleus of an atom
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| Atomic Number | the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus
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| Metal | such a substance in its pure state, as distinguished from alloys
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| Malleable | capable of being extended or shaped by hammering or by pressuring from rollers
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| Ductile | capable of being hammered out thin, as certain metals
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| Conductivity | the property or power of conducting heat, electricity, or sound
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| Reactivity | the relative capacity of an atom, molecule, or radical to go to undergo a chemical reaction with another atom, molecule or compound
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| Corrosion | way in which acids react with some metals so as to eat away the metal
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| Alkali Metal | any of the group univalent metals including potassium, sodium, lithium, rubidium, cedium, and francium, whose hydroxides are alkalis
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| Alkaline Metal | any of the group of bevalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals
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| Transition Metal | any element in any of the series of elements with atomic numbers 21-29, 39-47, 57-79, and 89-107, that in a given inner ortibal has less than a full quota of electrons
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| Alloy | a substance composed of two or more metals, or of a metal or metals with a nonmetal, intimately mixed, as by fusion or electrodeposition
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| Nonmetal | an element not having the characteristic of metal, as carbon or nitrogen
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| Diatomic Molecule | made of two or more atoms
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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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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.
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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