Matching
Simplest part of an element
Atom
Charged particles that move around an atom's nucleus
Electrons
Buffer
A substance that neutralizes small amounts of acids or bases added to a solution
Solute
2 Characteristics of Acids
Sour taste, corrosive, more hydronium ions
Particle composed of one or more atoms
Molecule
Chemical bonds are broken, atoms are rearranged and new bonds are formed during ____________
Catalyst
Reduce the amount of activation energy needed for a reaction
Solvent
Substance being dissolved into
What is the pH scales used for
To compare the concentration of H3O and OH- ions
Pure substance that cannot be broken down
Element
What is the correct order of states of matter from having the slowest moving particles to having the fastest moving particles
Solid, liquid, gas
Activation energy
Amount of energy needed to start the reaction
Concentration
Amount of solute in fixed amount of a solution
2 characteristics of bases
A pure substance composed of two or more elements
Compound
A chemical reaction that can proceed forward and backward
Reversible Reaction
Enzymes
Class of catalysts in living things
Hydronium Ions
"+" Ions (H3O)
What is the range of values for the pH scale
0-6 acidic 7 neutral 8-14 basic
Releases free energy
Exergonic reaction
The transfer of electrons between atoms
Aqueous Solution
Solution in which water is the solvent
Hydroxide Ions
"-" Ions (OH-)
If substance 1 has a pH of 9 and substance 2 has a pH of 12, which substance is more basic and by how much?
Substance 2 is 1000x more basic