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Chemistry; Ch.1 & 2

Crystal Cathedral High School Sophomores (Semester 1; Ms. Rose)

Alloy A solid solution containing different metals, and sometimes nonmetallic substances.
Aqueous Solution A solution in which the solvent is water.
Density The amount of matter (mass) in a given unit volume.
Endothermic Chemical reaction that absorbs heat energy.
Exothermic Chemical Reaction that gives off heat energy.
Law of Conservation of Mass In a chemical change, matter is neither created nor destroyed.
Mass The measure of the amount of matter an object contains.
Matter Anything that takes up space and has mass.
Compound A chemical combination of two or more different elements joined together in a fixed proportion.
Mixture A combination of two or more substances in which the basic identity of each substance is not changed.
Physical Change A change in matter where its identity does not change.
Chemical Change The change of one or more substances into other substances.
Qualitative An observation made without measurement.
Solute The substance that is being dissolved when making a solution.
Solvent The substance that dissolves the solute when making a solution.
Solution A mixture that is the same throughout, or homogeneous.
Neutron A subatomic particle with a mass equal to a proton but with no electrical change.
Proton A positively charged subatomic particle.
Electron Negatively-charged particle.
Nucleus The small dense, positively charged central core of an atom.
Theory An explanation based on many observations and supported by the results of many experiments.
Law of Conservation of Energy Statement that energy is neither created nor destroyed in a chemical change, but is simple changed from one form to another.
Law of Conservation of Mass In a chemical change, matter is neither created nor destroyed.
Atomic Number The number of protons in the nucleus of an atom of an element.
Atomic Mass The amount an atom weighs.
Electromagnetic Spectrum The whole range of electromagnetic radiation.
Electron Cloud The space around the nucleus of an atom where the atom's electrons are found.
Periodic Table Created by Dimitri Mendelev. An organized table with the elements of the earth.
Valence Electrons An electron in the outermost energy level of an atom.
Li (Alkali) Lithium
Na (Alkali) Sodium
K (Alkali) Potassium
Rb (Alkali) Rubidium
Cs (Alkali) Cesium
Fr (Alkali) Francium
Be (Alkaline) Beryllium
Mg (Alkaline) Magnesium
Ca (Alkaline) Calcium
Sr (Alkaline) Strontium
Ba (Alkaline) Barium
Ra (Alkaline) Radium
H (Nonmetal) Hydrogen
He (Nonmetal) Helium
B (Nonmetal) Boron
C (Nonmetal) Carbon
O (Nonmetal) Oxygen
F (Nonmetal) Flourine
Si (Nonmetal) Silicon
P (Nonmetal) Phosphorus
S (Nonmetal) Sulfur
Cl (Nonmetal) Chlorine
As (Nonmetal) Arsenic
Se (Nonmetal) Selenium
Br (Nonmetal) Bromine
Te (Nonmetal) Tellurium
I (Nonmetal) Iodine
At (Nonmetal) Astatine
Ne (Nonmetal) Neon
Ar (Nonmetal) Argon
Kr (Nonmetal) Krypton
Xe (Nonmetal) Xenon
Rn (Nonmetal) Radon
Ti (Inner/Trasition Metal) Titanium
Fe (Inner/Trasition Metal) Iron
Ag (Inner/Trasition Metal) Silver
Pt (Inner/Trasition Metal) Platinum
Al (Inner/Trasition Metal) Aluminum
Cr (Inner/Trasition Metal) Chromium
Ni (Inner/Trasition Metal) Nickel
Au (Inner/Trasition Metal) Gold
Hg (Inner/Trasition Metal) Mercury
Ge (Inner/Trasition Metal) Germanium
Nm (Inner/Trasition Metal) Manganese
Cu (Inner/Trasition Metal) Copper
W (Inner/Trasition Metal) Tungsten
U (Inner/Trasition Metal) Uranium
Rutherford's Experiment Consisted of a lead-shielded box containing radioactive polonium, which emitted positively charged particles through a small hole.
Democritus Proposed that the world is made up of empty space and atoms.
Dalton Made the atomic theory.
The Chocolate Chip Cookie Theory Made by Thomson.
The Planetary Revolution Theory Made by Niels Bohr.
The Electron Cloud Theory Made by Modern Scientists.
Created by: dez(a)rey