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19 Cards in this Set

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CHNOPS Biological elements
Carbo, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
Basic unit of structure in matter_________ which is composed of a________ surounded by an_______ ______.
Atom; nucleus; electron cloud
Positively charged particle
proton
Proton sign; neutron sign
p+: n0
Atoms with a charge are called?
Ions
Positive ions are called? and negative ions are called?
Cations; anions
Cations form when? Anions form when?
atoms lose elctrons; atoms gain electrons
A group of atoms that are chemically bonded
compound
we represent compounds with____________.
chemical formulas
Some biological compounds are:
water, oxygen, carbon dioxide, nitrogen, hydrogen, and glucose.
form when electrons are shared between atoms in a molecule
Covalent bonds
form when elctrons are shared between atoms forming an attraction between oppositely charged particles
ionic bonds
form between molecules in a substance
hydrogen bonds
The ability to do work
energy
Measure of the hydrogen ions
pH scale
forms hydrogen ions in a solution
acid
forms hydroxide ions in solution
base
4 types of biological compounds:
Carbohyrates, proteins, lipids, nucleic acid
Compounds that contain carbon are _______.
Organic