21-30 Flashcards
0
Q
Covalent Bond
A
forms when electrons are shared between atoms.
1
Q
Ionic Bond
A
formed when one or more electrons are transferred from one atom to another.
2
Q
Valence Electrons
A
the electrons in the outer shell or energy level that are available for bonding.
3
Q
pH
A
the measure of acidity or alkalinity of a solution.
4
Q
Acid
A
a substance that dissolves in water to release a hydrogen ion. (H+)
5
Q
Base
A
a substance that dissolves in water to release a hydroxide ion. (OH-)
6
Q
Deoxyribonucleic Acid (DNA)
A
the nucleic acid that contains all genetic
information for a cell.
7
Q
Double Helix
A
The shape of DNA that resembles a spiral staircase or a twisted ladder.
8
Q
Nucleic Acid
A
The building block of living organisms that passes genetic information from one generation to the next. (e.g. DNA)
