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The Elements

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