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acids,bases,PH scale
Question | Answer |
---|---|
what does the PH scale describe? | whether a substance is an acid or base |
what is an acid? | a substance that produce hydronium ions H3O+ when dissolved in water |
what kind of taste does an acid have? | sour |
acids react with metals to produce.......? | hydrogen gas |
it changes the litmus from _____ to _____ | blue to red |
(acid)when dissolved it_______into ______? | ionizes into hydrogen |
why are some acids considered strong? | all of the HCI molecules ionize to form as many hydronium ions as possible. |
why are some acids considered weak? | most of the acetic acid molecules remain as molecules so very few hydronium ions are formed. |
what is a base? | substance that produces hydroxide ions OH- when dissolved in water |
what kind of taste does a base have? | bitter |
it changes the litmus from _____ to _____ | red to blue |
why are some bases strong? | it ionizes completely to form as many hydroxide ions as possible. |
why are some bases weak? | most of its molecules do not react in water, so very few hydroxide ions are produced. |
when acids and bases are mixed in perfect proportions their properties disappear called a _________ reaction | neutralization |
what does pH describe? | the exact concentration of hydronium ions in a solution |
what does pH stand for? | power of hydrogen |