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Unit 4-Periodic Table-SAB
Unit 4
20
Science
Not Applicable
11/14/2015

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Term
element
Definition
a pure substance that cannot be broken down anymore; makes up everything in the universe
Term
pure substance
Definition
substance with only one type of particle
Term
molecule
Definition
group of two or more atoms
Term
atoms
Definition
the most basic particle; makes up elements
Term
compound
Definition
substance with two or more elements
Term
mixture
Definition
two or more substances with their own properties
Term
heterogeneous mixture
Definition
mixture where you can see and separate all of the parts
Term
homogenous mixture
Definition
mixture where you cannot see and separate all of the parts
Term
periodic table
Definition
an arrangement of elements with repeating patterns of properties
Term
chemical symbol
Definition
1 or 2 letter abbreviation for an element
Term
metals
Definition
group of elements, good conductors of electricity and heat
Term
metalloids
Definition
group of elements with properties of metals and nonmetals
Term
nonmetals
Definition
group of elements, poor conductors of electricity and heat
Term
luster
Definition
shiny and reflective, property of metals
Term
malleable
Definition
can be made into shapes, property of metals
Term
ductile
Definition
can be made into wires, property of metals
Term
dull
Definition
not shiny, property of nonmetals
Term
brittle
Definition
will break easily, property of nonmetals
Term
periodic table groups
Definition
columns (up and down) in the periodic table, have similar properties
Term
periodic table periods
Definition
rows (side to side) in the periodic table, have repeating patterns
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