elements and the periodic table vocab
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each of the black spaces below before clicking
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| The very small center core of an atom. | Nucleus
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| Small, positively charged particle in the nucleus of the atom. | Proton
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| Small particle in the nucleus of an atom, with no electrical charge. | Neutron
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| Tiny, negatively charged particle that moves around the nucleus of an atom. | Electron
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| The number of protons in the nucleus of an atom. | Atomic number
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| An atom with the same number of protons and a different number of neutrons from the other atoms of the same element. | Isotope
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| The sum of the protons and neutrons in the nucleus of an atom. | Mass number
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| In science, a diagram, mental picture, mathematical statement, or an object that helps explain ideas about the natural world. | Model
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| The average mass of all the isotopes of an element. | Atomic mass
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| A chart of the elements showing the repeating patterns of their properties. | Periodic Table
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| A one- or two letter representation of an element. | Chemical symbol
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| Horizontal rows in the periodic table. | Periods
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| Elements in the same vertical column of the periodic table; also called a family. | Group
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| A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity. | Metals
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| A term used to describe material that can be pounded into shapes. | Malleable
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| A term used to describe material that can be pulled out into a long wire. | Ductile
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| The ability of an object to transfer heat or electricity to another object. | Conductivity
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| The ease and speed with which an element combines, or reacts with other elements and compounds. | Reactivity
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| The gradual wearing away of a metal element due to a chemical reaction. | Corrosion
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| Elements in Group 1 of the periodic table. | Alkali Metals
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| Elements in Group 2 of the periodic table. | Alkaline Earth Metals
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| Elements in Group 3 - Group 12 of the periodic table. | Transition Metals
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| A mixture of two or more elements, one of which is a metal. | Alloy
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| A machine that moves atomic nuclei at higher and higher speeds until they crash into one another, sometimes forming heavier elements. | Particle accelerator
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| An element that lacks most of the properties of a metal. | Nonmetal
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| A molecule consisting of two atoms. | Diatomic molecule
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| An element found in Group 17 of the periodic table. | Halogen
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| An element found in Group 18 of the periodic table. | Noble gas
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| An element that has some characteristics of both metals and nonmetals. | Metalloid
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| A substance that can conduct electricity under some conditions. | Semiconductor
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| A state of matter that consists of a gas-like mixture of free electrons and atoms stripped of their electrons. | Plasma
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| The process in which two atomic nuclei combine to form a larger nucleus, forming a heavier element and releasing huge amounts of energy. | Nuclear fusion
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| The cloud-like region of gases left over in the remains of a shrinking, sun-sized star. | Nebula
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| An explosion of a massive star. | Supernova
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Created by:
bwise
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