Chemistry & Bio Chemistry Flashcards
What is the atomic number equal to
The number of protons
What is an atom
The smallest building block of life
What is the atomic mass number equal to
Neutrons + protons = atomic mass
Protons
Positive charge
Neutrons
Neutral charge
Electrons
Negative charge
Ions
An atom with too few or too many electrons
Isotope
two or more atoms with the same number of protons but a different number of electrons
Valence electrons
Outer shell of an atoms electrons
Ionic bond
A bond between opposite charged ions
Covalent bond
A bond where atoms share electrons
Polar
A negative and positive charged molecule
Hydrogen bond
Positive H2O attracted to negative H2O
Cohesion
Atoms attracted to the same type of atom
Adhesion
Atoms attracted to different types of atoms
Surface tension
Tension of water surface
What is the pH scale
A scale of how acidic or basic something is
Acid
More H+
Base
More OH-
What is a buffer
A solution that resists pH change
What does the Condensation reaction do
Makes polysaccharides
What does the hydrolysis reaction do
Breaks up polysaccharides
What are carbohydrates
Molecules made of monosaccharides
What is a monosaccharide
A simple sugar
What is a polysaccharide
A complex sugar
What does the Benedict’s test show
The presence of monosaccharides
What does the iodine test show
The presence of polysaccharides
