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89 Cards in this Set

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Product
A substance formed as the result of a chemical reaction
Chemical reaction
A process in which the identity and composition of one ore more substances are changed.
What is the difference between a pure substance and a mixture?
*A pure substance is uniform in its chemical composition and its properties all the way down to the microscopic level.
*The components of a mixture can be separated without changing their chemical identities
What are the two classifications for pure substances?
*Those that can undergo a chemical breakdown to yeield simpler susbances
*Those that cannot
How is a compound formed?
By combining two or emore elements to make a new substance.
When writing a chemical change how is it written?
*The reactant is written on the left.
*The product is written on the right.
*An arrow connects the two parts to indicate chemical change, or chemical reaction.
Al
Aluminum
Ar
Argon
Ba
Barium
Bi
Bismuth
B
Boron
Br
Bromine
Ca
Calcium
C
Carbon
Cl
Chlorine
Co
Cobalt
F
Fluorine
He
Helium
H
Hydrogen
I
Iodine
Li
Lithium
Mg
Magnesium
Mn
Manganese
Ni
Nickel
N
Nitrogen
O
Oxygen
P
Phosphorus
Pt
Platinum
Rn
Radon
Si
Silicon
S
Sulfur
Ti
Titanium
Zn
Zinc
Cu
Copper (cuprum)
Au
Gold (aurum)
Fe
Iron (ferrum)
Pb
Lead (plumbum)
Hg
Mercury (hydragyrum)
K
Potassium (kalium)
Ag
Silver (argentum)
Na
Sodium (natrium)
Sn
Tin (stannum)
Chemical formula
A notation for a chemical compound using element symbols and subscripts to show how many atoms of each element are present
How many chemical elements are there?
114
How is a two letter symbol written?
*First letter is capitalized *Second letter always lowercase.
How many elements occur naturally?
Only 90 occur naturally; the remaindar have been produced artificially by chemists and physicists.
Just as elements combine to form chemcial compounds, symbols are combined to produce________
chemical formulas
When no subscript is given for an element what is it understood to be?
1
What does the subscript show?
Number of atoms
Periodic table
A tabular format listing all known elements
Elements can be roughly divided into three groups they are?
metals, nonmetals, and metalloids (sometimes called semimetals)
Metal
A malleable element with a lustrous appearance that is a good conductor of heat and electricity
Nonmetal
An element that is a poor conductor of heat and electricity
How many of the known elements are metal?
90-aluminum, gold, copper and zinc, for example
At room temperature what form does a metal have?
solid (except for mercury)
On what side of the periodic table will you find metals located?
left
How many elements are nonmetal?
Seventeen
*eleven are gases at room temp.
*five are brittle solids
*one is a liquid
On what side of the periodic table will you find the nonmetals?
right
Where on the periodic table will you find the metalloids?
In a zigzag band between metals and nonmetals.
Metalloid
An element whose properties are intermediate between those of a metal and a nonmetal.
How many metals are metalloids?
Seven:Bi=Boron, Si=Silicon, Ge=Germanium, As=arsenic, Sb=Antimony, Te=Tellurium, At=Astatine
Carbon C
Hydrogen H
Oxygen O
Nitrogen
These foure elements are present in all living organisms
Arsenic As
May affect cell growth and heart function
Boron B
Aids in the use of Ca, P, and Mg
Calcium Ca
Necessary for growth of teeth and bones
Chlorine Cl
Necessary for maintaining sald balance in body fluids.
Chromium Cr
Aids in carbohydrate metabolism
Cobalt Co
Component of vitamin B-12
Copper Cu
Necessary to maintain blood chemistry
Fluorine F
Aids in the development of teeth and bones
Iodine I
Necessaryfor thyroid function
Iron Fe
Necessary for oxygen-carrying ability of blood
Magnesium Mg
Necessary for bones, teeth, and muscle and nerve action
Manganese Mn
Necessary for cabohydrate metabolism and bone formation
Molybdenum Mo
Component of enzymes necessary for metabolism
Nickel Ni
Aids in the use of Fe and Ca
Phosphorus P
Necesssary for growth of bones and teeth; present in DNA/RNA
Potassium K
Component of body fluids; necessary for nerve action
Selenium Se
Aids vitamin E action and fat metabolism
Silicon Si
Helps form connective tissue and bone
Sodium Na
Component of body fluids; necessary for nerve and muscle action
Sulfur S
Component of proteins; necessary for blood clotting
Zinc Zn
Necessary for growth, healing, and overall health
What is matter?
Anything that has mass and occupies volume-that is anything you can see, feel, or touch etc.
What kinds of properties does matter have?
*physical property
*chemical property
Physical change
A change that does not affect the chemical makeup of a substance or object
Chemical change
A change in the chemical makeup of a substance
How are chemical elements represented?
By one or two letter symbols
Property
A characteristic useful for identifying a substance or object. (size, color, temp, etc.)