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Chemistry > Chem test - acids, bases, PH > Flashcards

Chem test - acids, bases, PH Flashcards

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1
Q

What is an acid?

A

Acids are substances that produce Hydrogen ions (H+) when dissolved in an aqueous solution

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2
Q

Taste of acid?

A

Sharp/sour

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3
Q

Acids are…

A

Corrosive

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4
Q

Acids have a PH…

A

Less than 6.9

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5
Q

What color do acids turn litmus paper?

A

Turns blue litmus paper red

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6
Q

What are Bases?

A

Bases are substances that produce hydroxide ions (OH-) when dissolved in an aqueous solution

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7
Q

Whats the taste of bases?

A

Bases are bitter

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8
Q

How do bases feel?

A

Bases are slippery/soapy

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9
Q

Bases have a PH…

A

More than 7

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10
Q

What color do bases turn litmus paper?

A

They turn red litmus paper blue

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11
Q

What is the PH scale?

A

The PH scale is a scale that measures the degree of acidity or baseness of a substance

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12
Q

PH stands for…

A

Per Hydrogen

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13
Q

The PH scale ranges from:

A

0 - 14

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14
Q

Where are acids on the PH scale?

A

0 - 6

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15
Q

Where are bases on the PH scale?

A

8 - 14

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16
Q

7 on the PH scale is…

A

Neutral

17
Q

What is the acid in your stomach?

A

Hydrochloric acid

18
Q

What are antiacids used for?

A

Antiacids are strong bases that we take to neutralize the irritation/indigestion caused by the acids in our stomach

19
Q

Acids/bases in the garden?

A

Soap is used to calm the pain of bee & ant stings because the sting contains acid and soap is a base. With wasp stings, its a base that causes the most pain so in order to stop the pain you put an acid on like vinegar.

20
Q

What do both strong acids and strong bases have on common?

A

Strong acids and bases are both dangerous because they are corrosive

21
Q

Acids/bases in the swimming pool?

A

When Chlorine is added to a swimming pool it reacts with the water to produce hypochlorous acid which kills bacteria and algae, keeping the pool water safe. However, the acidity levels must remain between 7.2 and 7.8 or else it becomes dangerous for the swimmers

22
Q

Acids/bases in the kitchen:

A

Some food such as pickles, chutney, and tomato sauce last a log time without refrigeration because they contain acids that prevent the growth of microorganisms that would cause them to spoil. Others, such as onions and beetroot, are preserved by storing them in vinegar, also known as pickling them.

23
Q

Acids in your mouth:

A

Sugar is bad for your teeth because the acidity in sugar is corrosive and therefore eats away at the enamel of your teeth

24
Q

What is neutrilization?

A

Neutralization is when acids and bases are combined and cancel each other out, basically making all of the normal characteristics disappear.

25
Q

Common PH indicators are…

A

Litmus paper

Purple cabbage

26
Q

Acids react with these metals…

A

Magnesium, Zinc, Iron

Chemistry (5 decks)

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