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 all elements are organized into periods and groups according to their properties
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| Chemical symbol | One-or-two letter code that stands for an element
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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 two or more elements and cannot be seperated by physical means
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| Atom | Smallest partcile in 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 | Structure near the center of a cell that contains the cell's DNA
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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 sum of protons and neutrons in the nucleus of an atom
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| Atomic number | Numbers of protons in the nucleus of one atom of an element
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| Metal | Elements, usually solid, with a shiny surface
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| Malleable | A term used to describe material that can be pounded into shapes
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| Ductile | A term used to describe a material that can be pulled out into a longwire
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| Conductivity | The ability of an object to transfer heat or electricity to another object
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| Reactivity | The ease and speed with which an element combines, or reacts, with other elements and compunds
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| Corrosion | The gradual wearing away of a metal element due to a chemical reaction
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| Alkali Metal | An element in group 1 of the periodic table
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| Alkaline Earth Metal | An element in group 2 of the periodic table
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| Transition Metal | One of the elements in group 3 through 12 of the periodic table
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| Alloy | A mixture of two or more elements, one of which is a metal
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| Nonmetal | An element that lacks most of the properties of a metal
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| Diatomic Metal | A molecule consisting of two atoms
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| Halogen | Group of elements in the periodic table that are highly reactive nonmetals
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| Noble Gas | Group of elements in the periodic table that generally does not react with other elements
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| Metalloid | An element that has some characteristics of both metals and nonmetals
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| Semiconductor | A substance that can conduct electricity under some conditions
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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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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:
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