Elements
Element Symbols
Periodic Table
metals/nonmetals
metalloids
100
hydrogen cannot be broken down into simpler substance.
What is an element?
100
H
What is hydrogen?
100
The columns on the periodic table
What is a period?
100
it shines when polished
What is a metal?
100
elements with some properties of metals and some of nonmetals
What is metalloid?
200
atoms of a same element that have different numbers of neutrons
What is isotopes?
200
O
What is oxygen?
200
Elements in the same________ on the periodic table react with other elements in similar ways.
What is the column?
200
It conducts heat and electricity.
What is a metal?
200
metalloids that at high temperatures they conduct electricity, but at low temperature they stop electricity from flowing.
What is semiconductors?
300
a pure substance that cannot be broken down
What is an element ?
300
He
What is Helium?
300
number of protons in an atom of an element
What is atomic number?
300
Are not good at conducting electrity.
What is a nonmetal?
300
can be found on a chart between the metals and nonmetals
What is its location on the periodic table?
400
an element identified by the number of
What is the number of protons?
400
Ag
What is silver?
400
average mass of an element's isotopes
What is average atomic mass?
400
It can break or crumble.
What is a non metal?
400
metalloids cannot be
What is cannot be shaped without breaking
500
the sum of the number of protons and neutrons in an atom
What is mass number?
500
Au
What is gold?
500
a chart of the elements arranged into rows and columns according to their physical and chemical properties
What is the periodic table?
500
the measure of how difficult it is for an electric charge to flow through an object through an object.
What is electrical resistance?
500
Silicon, Boron, and Geranium are
What is an example of an metalloid?
M
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