Vocab
the smallest part of an element
What is an Atom?
horizontal rows of the periodic table
What are periods?
the charge of electrons
What is negative?
the number of protons in one Carbon atom
What is 6?
the center of an atom
What is the nucleus?
2 or more atoms
What is a molecule?
vertical columns on the periodic table
what are groups?
the charge of protons
What is Positive?
equal to the atomic number
What are protons and electrons?
the particles that surround the nucleus
What are electrons?
the number written before a chemical formula or equation to show how many molecules are present
What is the coefficient?
the number of periods on a periodic table
What is 7?
on the periodic table, this represents the number of protons in an atom
What is the atomic number?
method for calculating the number of neutrons in an atom
What is atomic mass-atomic number?
the motion of electrons in an atom
What is Orbit?
a substance made up of only one kind of atom
What is an element?
the elements on the left side of the periodic table
what are metals?
subatomic particles found inside the nucleus of an atom
What are protons and neutrons?
the number of protons in Mercury
What is 80?
the number that's equal to electrons in a neutral atom
What is protons?
a substance made of 2 or more different elements chemically combined
what is a compound?
inventor of the periodic table
Who is Demitri Mendeleev?
What is 8?
atomic mass of Argon
What is 40?
the mass numbers that appear in parentheses on the periodic table
What are the most stable or most common isotopes?