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Atomic Structure
Vocabulary For the Atomic Structure Unit
26
Biology
9th Grade
02/26/2014

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Term
Atom
Definition
The smallest unit of matter
Term
Proton
Definition
The part of the atom that has a positive charge
Term
Neutron
Definition
The part of the atom that has a neutral charge
Term
Electron
Definition
The part of the atom that has a Negative charge
Term
Ion
Definition
An atom that has a net charge of positive or negative due to gaining or losing one or more electrons
Term
Ionic Bond
Definition
A chemical bond that forms because of the attraction of oppositely charged Ions.
Term
Covalent Bond
Definition
A bond that forms between two atoms as a result of their sharing of electrons.
Term
Molecule
Definition
Made when two or more atoms bond together with a covalent bond.
Term
Hydrogen Bond
Definition
A bond that forms when the slightly positive hydrogen atom of one molecule is attracted to the slightly negative atom of another
Term
Cohesion
Definition
Describes the attaction between molecules of similar substances.
Term
Adhesion
Definition
Describes the attraction between molecules of different substances.
Term
Solution
Definition
A substance that is made by combining a solute with a solution
Term
Solvent
Definition

A substance that is the greater part of a solution... water is the universal solvent.

 

In Koolaide... water is the solvent while the koolaide powder is the solute

Term
Solute
Definition

The lesser part of a solution, usually a liquid... i.e.

 

cocoa in hot chocolate, milk is the solvent.

 

koolaide powder in koolaide, water is the solvent.

Term
pH
Definition

A measure of the acidic level of a solution. 1 = strongest acid - hydrochloric acid

6 = weakest acid - rain water

7 = neutral - pure water 

Term
Organic
Definition
Of, relating to, or derived from living matter.
Term

inorganic

or

not-organic

Definition
not consisting or derived from living matter
Term
monomer
Definition

smallest molecular subunit of a macromolecule...

examples: amino acid to protein

nucleic acid to DNA

Term
polymer
Definition
The combined monomers that form the larger macromolecules...
Term
carbohydrate
Definition

CHO

A molecule made of carbon, hydrogen, and oxygen. Includes starches, sugar, glucose. Gotten from pasta, glucose, sugar. Needed for quick energy.

Term
Lipid
Definition

The non-polar molecule made of CHO, with less Oxygen... fats, oils, waxes.

Used for storage of energy.

Term
Protein
Definition

The macromolecule made from CHON - carbon, hydrogen, oxygen, and nitrogen

Used for the rebuilding of the body, maing of enzymes

Term
Nucleic Acid
Definition

Made from CHONP - carbon, hydrogen, oxygen, nitrogen, and Phosphorus

DNA and RNA

Term
Chemical Reaction
Definition
The process where substances are changed to different substances by rearranging the elements of the molecule.
Term
Reactants
Definition

The parts needed for the chemical reaction of Photosynthesis, i.e.

Sun, Water, and CO2

The parts that go in...

Term
Products
Definition
The outcome compounds of a chemical reaction... i.e. the products of photosynthesis are O2 and Sugar
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