Elements
Au
What is gold?
Multiple atoms bonded together
What makes a molecule?
What is atoms?
Ernest Rutherford; Niels Bohr
Who created the Bohr and the Rutherford model?
The periodic table organizes these
What are elements?
Two elements chemically combined
What is a compound?
Has a definite and constant composition
What is a pure substance?
Protons and neutrons
What are located in the nucleus?
1 oxygen atom, two hydrogen atoms
What is a water molecule?
118
What is the number of elements on the periodic table?
Fe
What is iron?
What is the structure of an molecule?
Has to have at least one of these to be an atom
A single molecule made up of carbon atoms
What is a pure diamond?
Everything in it has the same number of valence electrons
What is a group?
Two or more elements joined together that can be easily brought apart
What is a mixture?
90 million
How many different kinds of molecules are known?
8
What is the number of electrons that fit in the second orbital ring in an atom?
Amedo Avogadro
Who invented the word molecule?
Dimitri Mendolev
Who created the periodic table?
What is titanium?
Compounds that contain carbon
What is an organic compound?
When an atom is not happy (stable)
What happens when an atom doesn't have 8 valence electrons?
Jean Perrin
Who discovered molecules?
Sulfur, Boron, and Arsenic
What are elements from the nonmetals group?