Definitions
The energy needed to get a reaction started.
What is activation energy?
The nucleus of the atom contains these two types of particles.
What are protons and neutrons?
A substance in which other substances are dissolved.
What is a solvent?
These make up your hair and muscles.
What are proteins?
The classification of a substance with a pH of 4.
What is an acid?
An attractive force that holds molecules of the same substance together.
What is cohesion?
When an atom loses an electron and gains a positive charge it is now called this.
What is an ion?
The weak electrical attraction between a partially positive hydrogen atom and a partially negative atom of another molecule (usually oxygen)
What is a hydrogen bond?
The basic building blocks of proteins. There are about 20 different ones.
What are amino acids?
In a carbohydrate, this is the ratio of Hydrogen to Oxygen atoms.
What is - the same ratio as in water: 2 Hydrogens for every 1 Oxygen.
One of several forms of an element, each containing the same number of protons but a different number of neutrons.
What is an isotope?
The number of atoms in this molecule:
OH
What is 2?
A solution in which water is the solvent.
What is an aqueous solution?
A special class of proteins that act as a catalyst for many chemical reactions.
What are enzymes?
The type of reaction that FORMS a sucrose molecule.
What is a dehydration reaction?
A lipid made from fatty acids that has NO DOUBLE BONDs between carbon atoms
What is a saturated fat?
A chemical bond formed by the sharing of electrons between two or more atoms.
What is a covalent bond?
The amount of heat energy required to increase the temperature of a substance
What is heat capacity?
The only group of an amino acid that differs from one amino acid to another.
What is the side group (or R group)?
The part of the nucleotide that is responsible for the way DNA stores information.
What is the nitrogenous base?
Two different molecules that have the same chemical formula but different structures and different properties.
What is an isomer?
A chemical bond formed when one or more electrons are transferred from one atom to another.
What is an ionic bond?
The region that will cool off MORE at night-a landlocked area like the desert OR a land mass near a lake
What is the landlocked area like the desert.
The name of the specific reactant acted on by an enzyme.
What is the substrate?
This type of bond holds the helixes of a DNA together.
What is a hydrogen bond?