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Chem Mod 3

Apologia Chemistry Module 3

Law of Mass Conservation Matter cannot be created or destroyed; it can only change form
Qualitative measurement A measurement that doesn't need to be exact
Quantitative measurement A measurement that needs to be as exact as possible
Element Any substance that cannot be decomposed into less massive substances
Compounds Substances that can be decomposed into elements by chemical means
Law of Definite Proportions The proportion of elements in any compound is always the same
Law of Multiple Proportions If two elements combine to form different compounds, the ratio of masses of the second element that react with a fixed mass of the first element will be a simple, whole-number ratio
Dalton's Atomic Theory - point 1
Dalton's Atomic Theory - point 2
Dalton's Atomic Theory - point 3
Dalton's Atomic Theory - point 4
Ionic compounds contain ... ... at least one metal atom and at least one nonmetal atom
Ionic compounds ... ... conduct electricity when dissolved in water
Covalent compounds contain .... ... only nonmetal atoms
Covalent compounds ... ... do NOT conduct electricity when dissolved in water
Naming ionic compounds 1. Start with the name of the first atom in the molecule 2. Take the next atom and replace its ending with an "ide"
Naming covalent compounds Use prefixes in front of the name of each atom in the compound, omitting any "mono" from the first atom
Mono One
Di Two
Tri Three
Tetra Four
Penta Five
Hexa Six
Hepta Seven
Octa Eight
Nona Nine
Deca Ten
Hydrogen H
Helium He
Lithium Li
Beryllium Be
Boron B
Carbon C
Nitrogen N
Oxygen O
Fluorine F
Neon Ne
Sodium Na
Magnesium Mg
Aluminum Al
Silicon Si
Phosphorus P
Sulfur S
Chlorine Cl
Argon Ar
Potassium K
Calcium Ca
Created by: thomas.macri



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