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PTOE Vocabulary(questions n answers)graded A+
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PTOE VocabularyPeriodic Table of Elements - correct answer ✔✔A chart that contains all of the chemical elements in
order of increasing atomic number, organized by Groups & Periods.
Dmitri Mendeleev - correct answer ✔✔1st person to create the PTOE.
Atomic Number - correct answer ✔✔the number of protons in the nucleus of an atom & it organizes the
PTOE.
Group - correct answer ✔✔set of chemical elements in the same vertical column of the periodic table.
Period - correct answer ✔✔set of chemical elements in the same horizontal row of the periodic table.
Physical/Chemical Properties - correct answer ✔✔characteristics of elements on the PTOE.
Atom - correct answer ✔✔the smallest unit of matter that has properties of a chemical element.
Element - correct answer ✔✔a pure substance which cannot be broken down by chemical means.
Matter - correct answer ✔✔anything that has mass & volume.
Metal - correct answer ✔✔Left side of PTOE. A substance with these properties: high electrical/thermal
conductivity, high luster, high malleability, MP (melting point)/BP (boiling point), etc.
Non-Metal - correct answer ✔✔Right side of PTOE. A substance with these properties: poor
electrical/thermal conductivity, low luster, brittle, low MP (melting point)/BP (boiling point), etc.
Metalloid - correct answer ✔✔A substance that shares properties of both metals & nonmetals.
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