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Chemistry Vocabulary

Jenna Gruber

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1.a material possessing properties such as luster, ductility, conductivity, and malleability
3.a material with properties intermediate between those of metals and nonmetals
5.a material that allows electricity to flow through it
8.the dense, positively charged central region of an atom that contains protons and neutrons
9.a particle without electrical charge, found in the nucleus of an atom
11.the group of elements consisting of fluorine, chlorine bromine iodine and astatine
13.an arrangement of elements in order of increasing atomic number
15.a vertical column of elements in the periodic table, also called a family group members share similar properties
16.the average mass of an atom of an element as found in nature
21.atoms of the same element with differing numbers of neutron
22.the property of a material that permits it to be flattened without shattering
23.a particle possessing a positive electrical charge that is found in the nuclei of all atoms, the total protons in an elements atom equals its atomic number
2.the reflection of light from the surface of a material
6.a material that does not allow electrical current to flow through it
7.the group of elements consisting of lithium, sodium, potassium rubidium cesium francium
10.a chemical reaction with oxygen gass that produces thermal energy and light: burning
12.an unreactive element belonging to the last group on the periodic table
14.a particle possessing a negative electrical charge, electrons surround the nuclei of atoms
17.the sum of the number of protons and neutrons in the nucleus of an atom of a particular isotopes
18.a material possessing properties such as brittleness, lack of luster, and nonconductivity, nonmetals are often insulators
19.a property of a material that permits it to be stretched into a wire without breaking
20.a horizontal row of elements in the periodic table

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