What is an atom?
A proton contains what kind of charge?
Positive
What is a pure substance made out of only one type of atom?
An element
Is water polar or nonpolar?
Water is polar
What are the four macromolecules?
Lipids
Proteins
Carbohydrates
Nucleic Acids
What are breaking and reforming in chemical rxns?
Chemical bonds
What makes up the nucleus of an atom?
Protons and neutrons
What is a substance made of atoms of different elements bonded together in a certain ratio?
A compound
What bonding gives water most of its unique properties?
Hydrogen bonding
What are the monomers of carbohydrates?
Monosaccharides
What are the substances being changed in a chemical rxn?
Reactants
Where do the electrons reside?
The electron cloud
What is a bond formed by the electrical force between two ions of opposite charge?
An ionic bond
What is adhesion?
Water molecules sticking to non-water molecules
What two pieces make up a lipid?
Glycerol and fatty acid
What are the substances being made by a rxn?
Products
What is the atomic number?
The number of protons
What is a bond formed when two atoms share a pair of electrons?
A covalent bond
What is cohesion?
Water molecules sticking to water molecules
What are the three parts of a nucleotide?
Pentose
Phosphate
Nitrogenous base
What is the energy needed to start a chemical rxn?
Activation energy
What makes up the mass of an atom?
Protons and neutrons
Two or more atoms held together by covalent bonding is called what?
A molecule
What atom(s) of water have a negative partial charge and what atom(s) have a partial positive charge?
Oxygen has a partial negative charge and both hydrogens have a partial positive charge.
What are the three basic structures of carbon-based molecules?
Chains
Rings
Branches
What is the state in which the reactants and products are being produced at the same rate?
Equilibrium