Science Acids/Bases + Reaction Rates
amount reacted or produced/time
kinetic energy is important to reaction rates because...
needed to react because particles need to be moving to collide with each other
impact of temperature
increases kinetic energy, increases reaction speed
impact of concentration
impact of particle size
increases - more surface area (smaller particles)
impact of catalyst
speeds up reaction without becoming part of it
what does pH measure?
hydrogen +1 ions
what does [H+1] mean?
concentration of hydrogen ions
less than 7 pH
greater than 7 pH
more H +1 means.....pH
less H +1 means.....pH
what does an indicator do?
changes color when pH changes
H +1 ions in water
properties of acids:
higher hydrogen ion concentration than pure water, sour, burn when touched, dissolve metals to form H2 gas
releases all possible H +1 ions
releases only some H +1 ions
properties of bases:
feel slippery, lower hydrogen ion concentration than pure water, higher OH concentration, bitter taste, dissolves fats and oils, corrode when touched
releases all OH in water
releases only some OH
what is neutralization?
reaction between acid and base - properties cancelled out - forms neutral product
acid + base =
salt + water
what kind of reaction is neutralization?
acid + metal =
hydrogen gas + salt
what kind of reaction is acid + metal?