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December QUIZ
Mixture Sheet, Acidic, Basic, Ionic, Covelent
16
Science
6th Grade
12/12/2010

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Term
Atom
Definition
The smallest unit of an element
Term
Molecule
Definition
Two or more atoms bonded together through a chemical reaction
Term
Mixture
Definition
A mixture is a substance made of more than one type of molecule/atom. Each type of molecule or atom keeps its original properties. Mixtures can be seperated based on physical properties. Ex: seperate m&ms based on their color
Term
Compound
Definition
A substance formed by a chemucal reaction between two or more different atoms/ molecules. Physical properties often change wehn a chemical reaction occurs. Compounds must be seperated by a chemical reaction. NOT physically.
Term
Heterogeneous
Definition
different mixture : where the particles are NOT evenly distributed/ dispersed. ex: cereal/ granola
Term
Homogeneous
Definition
same mixture: particles are evenly distributed/ dispersed-milk
Term
Solute
Definition
thing that is dissolved. ex: salt in saltwater
Term
Solvent
Definition
The liquid that solute is dissolved in. ex: water in saltwater
Term
Solution
Definition
Homogeneous mixture of a solid and a liquid where the solid does not settle out.
Term
Suspension
Definition
Heterogeneous mixture where the solute settles out over time. ex: chocolate milk
Term
Colloid
Definition
Hetero/Homogeneous mixture where the particle do not settle out but are normally quite large. Not see-through
Term
Bonding
Definition
a bond is made between two elements when compounds are formed.
Term
Covelent Bond
Definition
Bond where neither element is a metal. Electrons are shared evenly between two elements.
Term
Ionic Bond
Definition
At least one of the elements bonded is a metal. Electrons are stollen by one of the elements and the elements are bonded because of the attraction between possitive and negative Ions.
Term
Changing Acidity
Definition
Covelently bonded compounds can also be split apart in water resulting in positive and negative ions. Ions in water can change the acidity of the water.
Term
Acidic
Definition
If H+ ions are released from the compound then the water becomes more acidic.
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