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Atoms and PT

TermDefinition
Symbol the 1-2 letter abbreviation representing the element, usually found in the center of the elemental tile.
Group/Family The vertical column in the periodic table is called a _________.
Pure Substance a substance that has the same chemical makeup; can be an element or compound
Period the horizontal row on the periodic table is called a ________
Neutron subatomic particle that is neutral or has no charge
Metalloid an element that has the characteristics of both metal and nonmetals ; located on the zig-zag line of the periodic table
Atomic mass the number or protons+ neutrons in the nucleus; usually located on the bottom of the element tile
Reactants the starting substances in a reaction
Products the ending substances in a reaction
Nonmetals an element that is brittle, dull, and a bad conductor of electricity; located to the right of the zig-zag line on the periodic table
Proton subatomic particle with a positive charge; located in the nucleus
Compound 2 or more different elements chemically combined
Metals an element that is shiny, malleable, and a good conductor of electricity; located to the left of zig-zag line on the periodic table
Element atoms of 1 type
Periodic Table a table of known elements arranged by atomic number
Heterogeneous Mixture a mixture that looks different and all the parts of the mixture are visible
Law of Conservation of Mass states that matter/mass cannot be created or destroyed.
Valence Electrons outer shell electrons
Molecule 2 or more atoms combined together
Atom smallest part of matter
Electron subatomic particle with negative charge; located outside the nucleus
Nucleus the center of the atom
Atomic Number the number of protons/electrons in an atoms; usually located at the top of an element tile.
Mixture 2 or more elements and/or compounds physically combined.
Homogeneous Mixture A mixture that looks the same throughout; cannot see the different pieces in the mixture
Popular Physical Science sets

 



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