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acids and bases (universal indicator (strength of pH (amount of H+ and OH-…
acids and bases
universal indicator
strength of pH
amount of H+ and OH- ions
red, orange to yellow pH 0-6
pH0 strong acid pH 6 weak acid
H+ ions most at 0 and at 6 least
blue, dark blue, violet, purple
pH 8 weak base; pH 14 strong base
OH- ions increases
pH 7 Neutral
H+ ions =OH- ions
Neutralisation
H+ = OH-
Acid +base= Salt +water
Acid + Metal carbonate = Metal Salt+ CO2+water
Test for CO2 gas lime water goes cloudy
three lab acids; sour; H+ ions
HCl
chloride
HNO3
nitrate
H2SO4
sulfate
litmus test
red turns blue with a base
Neuutral no change
blue turns red with acid
Soapy to feel; bitter to taste; OH- ions
alkali: base that is soluble in water
NaOH; Mg(OH)2; KOH; Ca(OH)2
Carbonate bases
CaCO3; NaHCO3
