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Chemestry Finals
Quiz #1 #2 #3 #4 all together
32
Chemistry
8th Grade
11/30/2011

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Cards

Term
Where are acids and bases in the PH scale?
Definition

                                                            

 

Acids         7         Bases

Term
What happens when you mix and acid and a base?
Definition
You get a chemical reaction
Term
What is a solution?
Definition
a well mixed mixture
Term
what is a solvent?
Definition

more of something

 

(i.e. coffee)

Term
What is the solute?
Definition

Less of something

(i.e. sugar)

Term
Give 2 examples of an acidic substance, two examples of a basic substance, and one example of a neutral substance.
Definition

Neutral: water

Acid: lemon orange

Basic: milk coffee

Term
What is the scientific method?
Definition
a method scientists use to answer an hypothenise
Term
Give an example of how a doctor creating a drug might use the scientific method.
Definition
I think that mixing these 2 elements i will cure the hick ups.
Term
what is a synthesis reaction
Definition
combining substances
Term
what is a decomposition reaction
Definition
breaking down compounds
Term
what is a replacement reaction
Definition
switching
Term
BALENCING EQUATIONS
Definition
Term
what is exothermic
Definition
hot reaction
Term
what is endothermic
Definition
cold reaction
Term
what is actication energy
Definition
the energy tht sparks the reation
Term
electrons
Definition
negativaly charged particles
Term
protrons
Definition
positivaly charged particles
Term
neutrons
Definition
no charge; in the neucleus
Term
atomic mass
Definition
the mass of an atom
Term
orbital
Definition
the rings around the neucleus
Term
atom
Definition
has pro neu and elec
Term
molecule
Definition
two or more atoms that are combined
Term
ionic bond
Definition
to ions are attracted together
Term
covalent bond
Definition
co owners sharing electrons
Term
ion
Definition
an atom with a charge of either neg or pos
Term
electron dot diagram
Definition
a chart that shows the amount of valence electrons in an atom
Term
element
Definition
a type of atom that cannot be divided anymore and makes of everrything
Term
atomic #
Definition
the number of protrons an atom has
Term
valence electrons
Definition
the electrons on the outer shell of an atom; they are shared
Term
mass
Definition
the amount of stuff in an objet
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