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Class 10 Science Chapter 2 > S 10 C2 > Flashcards

S 10 C2 Flashcards

1
Q

What is an acid?

A

A substance that donates protons (H+) in a solution.

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2
Q

What is a base?

A

A substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution.

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3
Q

True or False: Acids have a pH less than 7.

A

True

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4
Q

True or False: Bases have a pH greater than 7.

A

True

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5
Q

What is the pH scale range?

A

0 to 14

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6
Q

Fill in the blank: A solution with a pH of 7 is considered __________.

A

neutral

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7
Q

What is the chemical formula for hydrochloric acid?

A

HCl

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8
Q

What is the chemical formula for sodium hydroxide?

A

NaOH

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9
Q

What is a strong acid?

A

An acid that completely dissociates in water.

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10
Q

What is a weak acid?

A

An acid that partially dissociates in water.

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11
Q

Give an example of a strong base.

A

Sodium hydroxide (NaOH)

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12
Q

Give an example of a weak base.

A

Ammonia (NH3)

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13
Q

What is the process called when an acid and a base react together?

A

Neutralization

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14
Q

What are the products of a neutralization reaction?

A

Salt and water

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15
Q

True or False: All acids taste sour.

A

True

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16
Q

True or False: All bases feel slippery.

A

True

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17
Q

What is the indicator used to test for acidity?

A

Litmus paper

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18
Q

What color does litmus paper turn in an acidic solution?

A

Red

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19
Q

What color does litmus paper turn in a basic solution?

A

Blue

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20
Q

Fill in the blank: A substance that can act as both an acid and a base is called __________.

A

amphoteric

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21
Q

What is the Arrhenius definition of an acid?

A

A substance that increases the concentration of H+ ions in water.

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22
Q

What is the Arrhenius definition of a base?

A

A substance that increases the concentration of OH- ions in water.

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23
Q

What is the Bronsted-Lowry definition of an acid?

A

A proton donor.

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24
Q

What is the Bronsted-Lowry definition of a base?

A

A proton acceptor.

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25
What is the term for a solution that resists changes in pH upon the addition of an acid or base?
Buffer
26
What is the primary component of a buffer solution?
A weak acid and its conjugate base or a weak base and its conjugate acid.
27
What is the effect of acids on metals?
They can react to produce hydrogen gas.
28
What is the effect of bases on fats and oils?
They can saponify them, producing soap.
29
Fill in the blank: The pH of a solution can be measured using __________.
a pH meter
30
What does the term 'conjugate acid-base pair' refer to?
A pair of species that transform into each other by the gain or loss of a proton.
31
What is the difference between a monoprotic acid and a diprotic acid?
A monoprotic acid donates one proton, while a diprotic acid donates two protons.
32
What is the pH of a 0.1 M hydrochloric acid solution?
1
33
What is the pH of a 0.1 M sodium hydroxide solution?
13
34
What is an acid?
A substance that donates protons (H+) in a solution.
35
What is a base?
A substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution.
36
True or False: Acids have a pH less than 7.
True
37
True or False: Bases have a pH greater than 7.
True
38
What is the pH scale range?
0 to 14
39
Fill in the blank: A solution with a pH of 7 is considered __________.
neutral
40
What is the chemical formula for hydrochloric acid?
HCl
41
What is the chemical formula for sodium hydroxide?
NaOH
42
What is a strong acid?
An acid that completely dissociates in water.
43
What is a weak acid?
An acid that partially dissociates in water.
44
Give an example of a strong base.
Sodium hydroxide (NaOH)
45
Give an example of a weak base.
Ammonia (NH3)
46
What is the process called when an acid and a base react together?
Neutralization
47
What are the products of a neutralization reaction?
Salt and water
48
True or False: All acids taste sour.
True
49
True or False: All bases feel slippery.
True
50
What is the indicator used to test for acidity?
Litmus paper
51
What color does litmus paper turn in an acidic solution?
Red
52
What color does litmus paper turn in a basic solution?
Blue
53
Fill in the blank: A substance that can act as both an acid and a base is called __________.
amphoteric
54
What is the Arrhenius definition of an acid?
A substance that increases the concentration of H+ ions in water.
55
What is the Arrhenius definition of a base?
A substance that increases the concentration of OH- ions in water.
56
What is the Bronsted-Lowry definition of an acid?
A proton donor.
57
What is the Bronsted-Lowry definition of a base?
A proton acceptor.
58
What is the term for a solution that resists changes in pH upon the addition of an acid or base?
Buffer
59
What is the primary component of a buffer solution?
A weak acid and its conjugate base or a weak base and its conjugate acid.
60
What is the effect of acids on metals?
They can react to produce hydrogen gas.
61
What is the effect of bases on fats and oils?
They can saponify them, producing soap.
62
Fill in the blank: The pH of a solution can be measured using __________.
a pH meter
63
What does the term 'conjugate acid-base pair' refer to?
A pair of species that transform into each other by the gain or loss of a proton.
64
What is the difference between a monoprotic acid and a diprotic acid?
A monoprotic acid donates one proton, while a diprotic acid donates two protons.
65
What is the pH of a 0.1 M hydrochloric acid solution?
1
66
What is the pH of a 0.1 M sodium hydroxide solution?
13

Class 10 Science Chapter 2 (2 decks)

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