Alkali Metals - ✔✔✔-Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
-Metals on the left most side of the periodic table (yellow)
Alkaline Earth Metals - ✔✔✔-Right next to Alkali Metals (Red).
-Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
Atom - ✔✔✔-Matter is built up from very tiny units called atoms.
Atomic Number - ✔✔✔-Number of protons in an element.
Chemical Change - ✔✔✔-Occurs when there is a change in chemical composition.
-Formation of new material.
-Irreversible by physical separation.
-Color change, evolution of gas, formation of precipitate.
Ex. Burning, cooking, rusting, growing, digesting
Coefficient - ✔✔✔-Number in front of chemical symbols.
Combustion - ✔✔✔-Carbon Compound+O=H2O + CO2
Compound - ✔✔✔-A pure substance made of two or more atoms that are chemically
combined. There are two types of compounds: Ionic and Molecular.
Controlled Variable - ✔✔✔-What stays the same.
Covalent (molecular) bond - ✔✔✔-Made up of atoms that are different.
, Chemistry Final Exam Study Guide with Questions and Answers – 100% Solved
Usually made up of all non-metal atoms.
Decomposition - ✔✔✔-AB=A +B
Density - ✔✔✔-The measurement of the mass of an object per unit volume of that object.
Formula: D=m/v
Dependent Variable - ✔✔✔-The variable that you are testing.
Double Displacement - ✔✔✔-AB+CD=AD +CB
Electron - ✔✔✔-Negative charge.
Element - ✔✔✔-A pure substance that cannot be decomposed into anything simpler by
chemical means.
Endothermic - ✔✔✔-Temperature decreases.
Exothermic - ✔✔✔-Temperature increases.
Group Number - ✔✔✔-Across the top of the periodic table. Number of Valence electrons.
Halogens - ✔✔✔-Green on periodic table
-Fluorine, Chlorine, Bromine, Iodine, Astatine
-All have negative charges.