Acids and Bases Flashcards

1
Q

All acids in a solution form has _______ ions.

A

Hydrogen.

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2
Q

Taste of acids

A

Bitter (sour).

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3
Q

How would a solution be acidic?

A

If it has more hydrogen ions than hydroxide.

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4
Q

What would the pH be if the solution was neutral?

A

7.

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5
Q

Range of pH scale

A

1 - 14.

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6
Q

pH of what is acidic

A

Less than 7.

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7
Q

How many hydrogen and hydroxide ions are there if it is neutral?

A

Equal amounts of a number greater than 1.

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8
Q

pH level of what is basic?

A

More than 7.

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9
Q

How can you find out if a solution is acidic or basic?

A

Litmus paper or universal indicator.

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10
Q

What do the colours on litmus paper mean?

A

Red is acidic. Blue is basic. If the solution is neutral the paper will stay the same colour as original.

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11
Q

What can litmus paper tell us?

A

Litmus can only tell us if the solution is acidic or basic. It cannot tell yes its pH. So it cannot tell us how acidic or how basic a given solution is.

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12
Q

What can universal indicator tell you?

A

Universal indicator gives a range of colours depending on the pH of the solution. The colour ranges from red to purple.

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13
Q

1 - 2

A

Red

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14
Q

3 - 4

A

Orange

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15
Q

5 - 6

A

Yellow

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16
Q

7

A

Green

17
Q

8 - 9

A

Blue

18
Q

10 - 11

A

Light purple

19
Q

11 - 12

A

Dark purple

20
Q

Acids when dissolved have ____

A

Hydrogen ions.

21
Q

Bases when dissolved have ____

A

Hydroxide ions.

22
Q

In general oxides and hydroxides of metals are ____

A

Bases

23
Q

Alkai

A

Soluble bases

24
Q

How are salts formed?

A

When the hydrogen from the acid is displaced by a metal.

25
Q

Metals react with acids to give?

A

Salt and hydrogen gas (in general).

26
Q

Formula of hydrochloric acid

A

HCl.

27
Q

Formula of sulfuric acid

A

H2SO4

28
Q

Formula of nitric acid

A

HNO3

29
Q

Acids react with bases to give?

A

Salt and water.