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Chem-Module 3

Continuous theory of matter The theory that matter is not composed of tiny particles, but is just one blob
Who proposed the Discontinuous Theory of Matter? Democritus
To understand something, you need to... Break it down into all of its component parts
Who is considered the founder of chemistry? Antoine Lavoisier
The Law of Mass Conservation Matter cannot be created or destroyed; it can only change forms
Element Any substance that cannot be decomposed into less massive substances
The jagged line in the periodic table separates the metals from the non-metals
Even though hydrogen is left of the jagged line it is always considered a non-metal
What are metalloids? Elements that have both nonmetal properties and metal properties
Compound Substances that can be decomposed into elements by chemical means
The Law of Definite Proportions The proportion of elements in any compound is always the same
The 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 e a simple, whole-number ratio.
Dalton's theory contained how many vital assumptions? 4
What is the first assumption? All elements are composed of small, indivisible particles called "atoms."
What is the second assumption? All atoms of the same element have exactly the same properties.
What is the third assumption? Atoms of different elements have different properties.
What is the fourth assumption? Compounds are formed when atoms are joined together. Since atoms are indivisible, they can only join together in simple, whole-number ratios
An example of a chemical symbol is... H, which stands for Hydrogen
An example of a chemical formula is... H2O, which stands for a water molecule
Covalent compounds cannot conduct electricity
Ionic compounds can conduct electricity
A compound is ionic if it has... at least one metal atom and at least one nonmetal atom
A compound is covalent if it has... only nonmetal atoms
To name an ionic compound, you... 1. Start with the name of the first atom in the molecule 2. Take the next atom in the molecule and the "ide" suffix 3. Put those two names together to get the name
To name a covalent compound, you... Do the same steps as with ionic, but add prefixes.
mono means one
di means two
tri means three
tetra means four
penta means five
hexa means six
hepta means seven
octa means eight
nona means nine
deca means ten
H Hydrogen
He Helium
Li Lithium
Be Beryllium
B Boron
C Carbon
N Nitrogen
O Oxygen
F Fluorine
Ne Neon
Na Sodium
Mg Magnesium
Al Aluminum
Si Silicon
P Phosphorus
S Sulfur
Cl Chlorine
Ar Argon
K Potassium
Ca Calcium
Sc Scandium
Ti Titanium
V Vanadium
Cr Chromium
Mn Manganese
Fe Iron
Co Cobalt
Ni Nickel
Cu Copper
Zn Zinc
Ga Gallium
Ge Germanium
As Arsenic
Se Selenium
Br Bromine
Kr Krypton
Rb Rubidium
Sr Strontium
Y Yttrium
Zr Zirconium
Nb Niobium
Mo Molybdenum
Tc Technetium
Ru Ruthenium
Rh Rhodium
Pd Palladium
Ag Silver
Cd Cadmium
In Indium
Sn Tin
Sb Antimony
Te Tellurium
I Iodine
Xe Xenon
Cs Cesium
Ba Barium
La Lanthanum
Ce Cerium
Pr Praseodymium
Nd Neodymium
Pm Promethium
Sm Samarium
Eu Europium
Gd Gadolinium
Tb Terbium
Dy Dysprosium
Ho Holmium
Er Erbium
Tm Thulium
Yb Ytterbium
Lu Lutetium
Hf Hafnium
Ta Tantalum
W Tungsten
Re Rhenium
Os Osmium
Ir Iridium
Pt Platinum
Au Gold
Hg Mercury
Tl Thallium
Pb Lead
Bi Bismuth
Po Polonium
At Astatine
Rn Radon
Fr Francium
Ra Radium
Ac Actinium
Th Thorium
Pa Protactinium
U Uranium
Np Neptunium
Pu Plutonium
Am Americium
Cm Curium
Bk Berkelium
Cf Californium
Es Einsteinium
Fm Fermium
Md Mendelevium
No Nobelium
Lr Lawrencium
Rf Rutherfordium
Db Dubnium
Sg Seaborgium
Bh Bohrium
Hs Hassium
Mt Meitnerium
Uun Ununnilium
Uuu Unununium
Uub Ununbium
How many elements are there? 116
Created by: akikoandpoog