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The Elements

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Across
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silicon, germanium, arsenic, antimony, and tellurium are ______
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an atom with a dense center of positive charge
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he sum of the number of neutrons and the number of protons in a given nucleus
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appear in the right upper hand of the periodic table. Lack the properties of metals
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a charged entity
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a positive ion
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elements made of tiny particles
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second column of elements is called ________
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first column of elements is called ______
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distinct substance that is composed of the atoms of two or more elements
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this chart shows all of the known elements
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the types of atoms and the number of each type in each unit of a compound are expressed by this
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same size as an electron but has a positive charge
Down
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abbreviations for chemical elements. Usually consists of the first or first two letters of the element name
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eighth column of elements is called_____
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slightly bigger than electron and has no charge
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the number of protons in a nucleus of an atom
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atoms with the same number of protons but different numbers of neutron
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negatively charged ion
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developed by Ernest Rutherford in which a small positively charged nucleus is surrounded by planetary electrons.
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a large collection of elements that spans many vertical columns
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atoms contain negative particles called _____
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The columns of the periodic table are called _____
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Rows of the Periodic table are called ____
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seventh column of elements is called ______