Atoms
What makes up 99.9% of the atom's mass?
The nucleus
What is created when two or more atoms chemically combine?
A Molecule
What is the chemical symbol for Carbon?
C
What are the horizontal rows on the periodic table called?
Periods
What is the number at the top of an elements "square" on the periodic table called?
Atomic Number
Which subatomic particle has a negative charge?
electrons
What are the two types of molecules?
Compound Molecules & Elemental Molecules
What is the chemical symbol for Helium?
He
What are the vertical columns on the periodic table called?
Groups or Families
True/False: The Atomic Mass divided by the Atomic Number gives you the number of neutrons.
False
Negatively charged ____________ are attracted to positively charged_________.
Which type of molecule contains two or more atoms of the same element?
Elemental Molecule
What is the chemical symbol for Iron?
Fe
What are the elements called in the two rows that are pulled out on the bottom of the periodic table?
Rare Earth Metals
Which subatomic particle's number is found by looking at the element's atomic number?
Protons
On a Bohr Model, what are the orbitals called where the electrons orbit?
Electron Energy Levels or Electron Shells
Which type of molecule is CO2?
What is the chemical symbol for Silver?
Ag
What group of elements have atoms that are stable and do not bond?
Noble Gases
True/False: When elements form compounds, they retain their physical and chemical properties.
False
Which subatomic particle acts like a glue in holding the nucleus together?
Neutrons
True or False: Are all compounds are molecules.
True
What is the chemical symbol for Tungston?
W
How is the periodic table arranged?
By increasing Atomic Number
What do you call a variation of at atom that has the same number of protons, but different number of neutrons?
Isotopes