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What is Bose-Einstein Condensate?
Is a group of atoms cooled to absolute zero. (0 kelvin, - 270ºC)
What is a solid?
Has define volume and shape, molecules are very closed together.
What is a liquid?
define volume, but an indefinite shape. Assumes the shape of its container. Particles are closed together but can move one another.
What is a gas?
Has neither define volume nor definite shape. The gas will expand to fill any size container and takes the shape of the container.
What is a plasma?
The atoms lose most of their electrons. Electrons are negatively charged particles that move about the atomic nucleus
What is vaporization?
When the substance changes from a liquid to a gas
What is sublimation?
When, the substance changes directly from a solid to a gas without going through the liquid phase.
What is deposition?
When the substance changes directly from a gas to a solid without going through the liquid phase.
What are the 3 parts of an atom? Describe them.
Proton, Neutron, Electron.
Who was Dmitri Mendeleev?
He created the first periodic table of elements
What is the periodic table of elements?
Shows all known elements in the universe. Organizes the elements by chemical properties
How is the periodic table of elements organized?
Elements are organized on the table according to their atomic number.
How do you find the atomic number?
Atomic number = # of protons
How do you find the atomic mass?
Atomic mass = protons + neutrons
What is a valence electron?
Valence electrons are the electrons in the outer energy level of an atom.
How many valence electrons does group 2 have?
2
