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23 Cards in this Set
- Front
- Back
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what is the pH value of an acidic solution? |
<7 |
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what is the pH value of a basic solution? |
>7 |
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what is the pH value of a neutral solution? |
7 |
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what does the pH value represent? |
the concentration of hydrogen or hydroxide ions in the solution |
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how many times stronger an acid is pH 3 than pH 6? |
1000 times (1000 times more hydrogen ions) |
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what colour does litmus paper turn when placed in an acidic solution? |
red
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what colour does litmus paper turn when placed in a basic solution? |
blue
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what does an acid taste like? |
sour
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what does a base taste like? |
bitter
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which one conducts electricity, acids or bases? |
both!!!!!!!!
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what is the formula for HCl? |
hydrochloric acid
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what is the formula for NaOH? |
sodium hydroxide
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what is the formula for acetic acid? |
CH3COOH
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what is the formula for nitric acid? |
HNO3
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is Mg(OH)2 an acid or a base? why? |
it's a base because it has hydroxide ions
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how can you tell if a substance is an acid? |
it has hydrogen (usually at the front) |
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how can you tell if substance is a base? |
it has hydroxide |
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metal + acid > |
H2 + salt |
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acid + carbonate > |
salt + water + carbon dioxide |
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acid + base > |
salt + water |
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metal oxide + water > |
base |
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non-metal oxide + water > |
acid |
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what are the most reactive metals? |
alkali metals |
