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Published byBrittany Reynolds
Modified over 7 years ago
Chemistry Goal 10
Substances can be classified as acid, base, or neutral based on their pH. Acids and bases are solutions usually with water as a solvent.
Can be identified by: ◦ Sour taste ◦ Reacts with some metals ◦ Reacts with bases to form a neutral pH solution ◦ pH is less than 7; the lower the number, the more acidic the solution
Can be identified by: ◦ Bitter taste ◦ Slippery feel ◦ Reacts with acids to form a neutral pH solution ◦ pH is greater than 7; the higher the number, the more basic the solution.
Is neither an acid nor a base Pure water is neutral and has a pH near 7
Substances that can be used to determine whether a solution is acidic, basic, or neutral.
Changes color in the presence of an acid or a base Blue litmus paper turns red in an acid and stays blue in a base. ◦ BRA Red litmus paper turns blue in a base and stays red in an acid. ◦ RBB
Test for a base ONLY Is colorless and turns magenta (bright pink) in the presence of a base Stays colorless in acidic and neutral solutions
Has a range of colors depending on the pH of the solution The color of the paper is compared to a chart to determine the actual pH number.
A = ______ B = ______ C = ______ D = ______
Zoom Kitchen Lab from Friday
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Sour to taste Turn litmus red Phenolphthalein stays colorless Electrolytes (conduct) React with some metals to form H 2 gas How do we recognize.
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Acids and Bases. Properties of Acids þ Produce H + (hydrogen) ions in water þ Taste sour þ Corrode metals þ React with bases to form a salt and water.
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