chem unit 4- acids and bases

acids characteristics

• tastes sour

• conduct electricity

• react with active metals to produce H2(g)

• change colour of chemical indicators

• blue litmus turns red

• lose acidity when combined with bases

• H+

bases characteristics

• low melting points

• conduct electricity

• feels slippery

• change colour of chemical indicators

• red litmus turns blue

• lose basicity when mixed with acids

• OH-

concentration

• how much solute per volume of solution

• acids range from 10^-8M to 18M

• concentrated refers to 6M and up

• dilute refers to less than 6M

strength

• how well a substance will dissociate into ions or hydrolyze to form H3O+ or OH- ions

• stronger means it produces more ions