vocab metals
Vocabularies
Inside of an Atom
Elements
The Periodic Table
100
elements that are good conductors of electric current and heat
What is a metal?
100
a substance reacts with another substance
What does reactivity mean?
100
positive charge clustered into a tiny region of its center
What is a nucleus?
100
the number of protons in the nucleus of an atom
What is an atomic number?
100
an arrangement of elements showing repeating pattern
What is the periodic table?
200
materials is one that can be hammered or rolled into flat or other shapes
What does malleable mean?
200
wearing away due to a chemical reaction
What is corrosion?
200
the negative charged particles
What is an electron?
200
the sum of protons and neutrons in the nucleus of an atom
What is the mass number?
200
the horizontal lines of the periodic table
What are the periods?
300
material that can be pulled out, or dawn into a long wire
What does ductile mean?
300
atoms of the same element that have different numbers of neutrons
What is an isotope?
300
the positive charged particles
What is a proton?
300
an element's movement related to ___
What is an energy level?
300
the vertical lines of the periodic table
What are groups
400
the ability of an object to transfer heat
What is thermal conductivity?
400
the smallest particle of an element
What is an atom?
400
has no electric charge
What is neutron?
400
the avenge mass of all the isotopes of an element
What is atomic mass?
400
Mendeleev
Who created the first periodic table?
500
the ability of an object to transfer electric
What is electrical conductivity?
500
John Dalto
who created the atomic theory?
500
because it has no electric charge
Why are neutrons hard to detect?
500
representation of an element
What is a chemical symbol?
500
atomic mass, atomic number, symbol, and name
What are the four pieces of info. in each square of an element?
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