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Chemistry
Chemistry Quiz
30
Chemistry
10th Grade
09/19/2012

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Cards

Term
Mass
Definition
Amount of matter
Term
Volume
Definition
How much space it occupies
Term
Matter
Definition
Anything that has mass or volume
Term
Characteristics of Matter
Definition

Physical Properties-color, odor, shape, etc.

Chemical properties- ability to change into new substance in result of chemical change

Term
Atoms
Definition
Smallest unit of matter
Term
Parts of an Atom
Definition

Protons- positive

Neutrons- no charge

Electrons- negative

Term
Atomic number
Definition
Number of protons
Term
Atomic Mass
Definition
Number of Protons and Neutrons
Term
Chemical Elements
Definition
Made up of one type of atom
Term
Isotopes
Definition
Have same number of protons and electrons, but differ in the number of neutrons
Term
Radioactive Isotopes
Definition
Unstable nucleus- break down at specific rate
Term
What are compounds and molecules made up of?
Definition
2 or more elements.
Term
Ionic Bonding
Definition
Give and take of electrons
Term
Covalent Bonds
Definition
Sharing of electrons
Term
Chemical Reactions
Definition
Anytime a chemical bond is formed or broken, a reaction occurs
Term
Structural formulas
Definition
Show arrangement of elements in a compound
Term
Elements that make up the human body
Definition
Carbon, Hidrogen, Oxygen, and Nitrogen (CHON)
Term
Polarity
Definition
A relation between opposite attributes or tendencies
Term
Why is a water molecule polar?
Definition
It has an uneven distrubution of electrons.
Term
Cohesion
Definition
An attraction between molecules of the same substance
Term
Adhesion
Definition
An attraction between molecules of different substances
Term
Mixture
Definition
Material composed of two or more elements/compounds that are physically mixed together, but not chemically combined.
Term
What are the two Mixtures made with water
Definition
Solution and Suspention
Term
Solution
Definition
Mixture of two or more substances in which the molecules of the substances are evenly distributed
Term
What are the two parts of a Solution?
Definition

Solute: dissolved matter in a solution

Solvent: Does the dissolving

Term
Suspension
Definition
Mixture of water and non-dissolved materials ex. blood
Term
Acids
Definition
Any compound that forms H+ ions in the solution, higher concentrations of H+ ions than water, and have a pH values below 7.
Term
Bases
Definition
Any compound that forms OH- ions in the solution, lower concentrations of H+ ions than water, and has  pH values above 7
Term
Buffers
Definition
Chemical substances made by the body to regulate pH
Term
pH scale
Definition

1: hydrochloric acid

7: Water

12: Milk of magnesia

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