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2nd Sem M5 Chemistry Chapter 1

2nd Sem M5 Chemistry Chapter 1

Assessment

Presentation

Science, Biology, Chemistry

7th - 12th Grade

Practice Problem

Medium

Created by

Lady Alias

Used 11+ times

FREE Resource

47 Slides • 67 Questions

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Multiple Choice

It is a solution that has an excess H+ ions.

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Electrolyte

2

acid-base solution

3

Acid

4

Base

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Multiple Choice

Acid comes from the Latin word acidus that means _______ or ________.

1

Electrolyte, alkali

2

dense, bitter

3

shinny, sweet

4

sharp , sour

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Multiple Choice

A substance has a "sour" taste. The substance is going to be considered a/an...

1

Acid

2

Base

3

Electrolyte

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Multiple Choice

The more H+ ions, the more the solution to be ___________.

1

Acidic

2

Basic

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Multiple Choice

Which statement is NOT a property of an acid.

1

Turns blue litmus paper into Red

2

Can react with metals

3

Do not react with metals

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Multiple Choice

Which acid is present in a vinegar?

1

Citric Acid

2

Acetic Acid

3

Ascorbic Acid

4

Sulfuric Acid

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Multiple Choice

Which acid is present in a sour candies such as lemonhead and sour patch?

1

Citric Acid

2

Acetic Acid

3

Ascorbic Acid

4

Sulfuric Acid

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Multiple Choice

Which acid is part in the composition of Vitamin C?

1

Citric Acid

2

Acetic Acid

3

Ascorbic Acid

4

Sulfuric Acid

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Multiple Choice

This type of acid is used in the production of fertilizers, steels, paints and plastics.

1

Citric Acid

2

Acetic Acid

3

Ascorbic Acid

4

Sulfuric Acid

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Multiple Choice

It is a solution that has an excess OH- ions.

1

Electrolyte

2

acid-base solution

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Acid

4

Base

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Multiple Choice

Another word for Base is _______.

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Alkali

2

acid-base solution

3

Acid

4

Base

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Multiple Choice

Bases are substances that can ______ hydrogen ions.

1

share

2

accept

3

release

4

give out

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Multiple Choice

Which statement is NOT a property of a base.

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Turns red litmus paper Blue

2

Can react with metals

3

Do not react with metals

4

Taste bitter

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Multiple Choice

________ and _______ are examples of familiar products that contains bases.

1

ascorbic acid

2

cetric acid

3

vinegar

4

Chalk , oven cleaner

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Multiple Choice

What is a substance that produces Hydronium ions when it dissolves in Water?

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Acid

2

Base

3

Ionization

4

Hydronium Ion

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Multiple Choice

Bases release ____________ ions when they break down or dissociate. 
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Hydrogen (H+)
2
Hydroxide (OH-)
3
Chlorine (Cl-)
4
no

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Multiple Choice

Acids produce _________ ions when they break down or dissocciate. 
1
Hydroxide (OH-)
2
Water
3
Chlorine (Cl-)
4
Hydrogen (H+)

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Multiple Choice

Which of the following is NOT a characteristic of an acid?

1

sour taste

2

corrosive

3

turns litmus paper blue

4

neutralises bases

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Multiple Choice

Which characteristics describe a base?

1

tastes sour, litmus indicator turns blue

2

tastes bitter, litmus indicator turns blue

3

tastes bitter sour, litmus indicator turns blue green

4

tastes bitter sour, litmus indicator turns green

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Multiple Choice

Properties of bases are

1

feel soapy and neutralise acids

2

irritate your skin and react with metals to produce bubbles

3

taste sour and turn litmus red

4

have pH less than 7

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Multiple Choice

Which characteristics describe an acid?

1

tastes sour, litmus indicator turns red

2

tastes bitter, litmus indicator turns blue

3

tastes sweet and sour, litmus indicator turns red

4

tastes sour and bitter, litmus indicator turns blue

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​Acids and Bases as Electrolytes

​Electrolyte - is a substance that dissolves in water (or other polar solvent) to produce ions and solution that conducts electricity.


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​Acids and Bases as Electrolytes

Acids and Bases are categorized in terms of their "strength", the degree to which they dissociate into ions in water.

Strong acids and strong bases dissolves completely into ions. Therefore, soluble ionic compounds, they are strong electrolytes and conducts a large current.

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​Acids and Bases as Electrolytes

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​Weak Acids

​Weak Bases

​CH₃COOH Acetic acid

​NH₃ Ammonia

​HF Hydroflouric acid

​Al(OH)₃ Aluminum hydroxide

​H₂CO₃ Carbonic acid

​Mg(OH)₂ Magnesium hydroxide

​H₃PO₄ Phosphoric acid

​HF Hydrofluoric acid

​HCOOH Formic acid

​HNO₂ Nitric acid

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​Acids and Bases as Electrolytes

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​Compounds from non-metals are non-electrolyte.

​Glucose (C₆H₁₂O₆)

​Ethanol (C₂H₅OH)

​Sucrose (C₁₂H₂₂O₁₁)

​Butane (C

​Non - Electrolytes

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​Instructions:

Classify each compound whether a Strong Electrolyte, Weak Electrolyte or Non-Electrolyte.

Note: Just type Strong, Weak or Non-E for your answer.

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Fill in the Blank

NH3

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Fill in the Blank

C4H10

-

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Fill in the Blank

LiOH

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Fill in the Blank

HCl

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Fill in the Blank

CCl4

-

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Fill in the Blank

NaOH

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Fill in the Blank

HF

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Fill in the Blank

HBr

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Fill in the Blank

HI

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Fill in the Blank

KOH

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Fill in the Blank

CH3COOH

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Fill in the Blank

HNO3

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Fill in the Blank

H3PO4

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Dropdown

When acids are mixed with water, they release ​
ions.

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Dropdown

When bases are mixed with water, they release ​
ions.

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Dropdown

When added to water, Rubidium Hydroxide (RbOH) will disassociate into Rb+ and OH-. According to Arrhenius, this would be classified as a(n)​
because​ it increases the concentration of​
ions in water.

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Dropdown

​ According to Arrhenius, ​
are substances that, when added to water, increase the concentration of OH- ions.

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Multiple Choice

According to Bronsted-Lowry, which of the following will "donate" an H+ ion?

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Acid

2

Base

3

Solution

4

Water

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Multiple Choice

What range of values on the pH scale represent solutions with a higher ratio of hydronium (H3O+) ions?

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0-14

2

below 7

3

7

4

above 7

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Multiple Choice

Which of the following is true .

1

Acids and bases form hydroxide ions in solution

2

Acids form hydroxide ions and bases hydrogen ions in solution

3

Acids form hydrogen ions in solution, bases do not form ions in solution

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Acids form hydrogen ions in solution and bases hydroxide ions

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Multiple Choice

What happens immediately after you dissolve acid in water?
1
Positively charged hydrogen atoms are released.
2
Hydronium ions are released.
3
Negatively charged hydrogen atoms are released.
4
Neutrally charged hydrogen atoms are released.

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Multiple Choice

As the pH of a solution gets lower, the solution becomes more _____.

1

acidic

2

basic (or alkaline)

3

neutral

4

ionic

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Multiple Choice

Which element is common to all acids?

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Hydrogen

2

Oxygen

3

Carbon dioxide

4

Helium

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Multiple Choice

Question image

A/an ____________________ has a pH of less than 7.

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Acid

2

Base

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Multiple Choice

What would happen to the blue and red litmus papers when they are dipped into a sample of acid rain?

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Blue litmus paper remains blue and red litmus paper remains red.

2

Blue litmus paper turns red and red litmus paper turns blue.

3

Blue litmus paper remains blue and red litmus paper turns blue.

4

Blue litmus paper turns red and red litmus paper remains red.

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Multiple Choice

Question image
According to the pH range which substance is more acidic than lemon juice
1
Hydrochloric acid
2
cabbage
3
milk

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Multiple Choice

What does pH measure?

1

the amount of hydrogen (H+) ions

2

the amount of hydroxide (OH-) ions

3

amount of water

4

all of the above

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Multiple Choice

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

1

lemon juice, milk, baking soda, bleach

2

bleach, baking soda, milk, lemon juice

3

milk, lemon juice, baking soda, bleach

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baking soda, bleach, lemon juice, milk

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Multiple Choice

Which pH is considered neutral?
1
1
2
3
3
7
4
14

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Multiple Choice

What is the purpose of an "indicator"?

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changes color if a chemical reaction occurs

2

changes color if a physical change occurs

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changes color in the presence of an acid or base

4

changes color when a salt dissolves in water

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Multiple Choice

The pH of 4 solutions were measured in a lab. Which solution is the most acidic?

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2
3
4

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Multiple Choice

The pH of 4 solutions were measure in a lab. Which of the solutions is the most basic (alkaline)?

1
2
3
4

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Multiple Choice

In the following chemical equation, which compound is the base?


HCl + NH3 → NH4+ + Cl

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HCl

2

NH3

3

NH4+

4

Cl

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Multiple Choice

In the equation below, what is the Bronsted-Lowry acid?

HCl + NH3 → Cl- + NH4+

1

HCl

2

NH3

3

Cl-

4

NH4+

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Multiple Choice

Which reactant in the following equation is a Bronsted Lowry acid?

H2O + HCl → H3O+ + Cl-

1

Water

2

Hydrogen chloride

3

Hydronium

4

Chloride

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Multiple Choice

Question image

A combination of particles of one or more substance that are distributed uniformly throughout another substance is a/an

1

Mixture

2

Substance

3

Solution

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Multiple Choice

Which of the following are properties of acids?

1

They conduct electricity when dissolved in water

2

They taste sour

3

They react with metals to produce hydrogen gas

4

All of the answer choices are correct

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Multiple Choice

Bases have many uses. They are mainly used to make

1

cleaning products

2

soaps

3

concrete

4

all of the answer choices

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Multiple Choice

Question image

If the substance is neutral, what would the pH be?

1

3

2

5

3

7

4

9

5

11

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Multiple Choice

Question image

Which of the following pH values represents a base?

1

2.1

2

4.6

3

6.8

4

8.1

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Multiple Choice

Question image

Which is the stronger acid?

1

pH 1

2

pH 4

3

pH 8

4

pH 13

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Multiple Choice

Question image

Which of the following is a base?

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baking soda in water

2

orange juice

3

vinegar

4

lemonade

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Multiple Choice

Question image

The strongest bases have pH values close to

1

0

2

14

3

7

4

5

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Multiple Choice

If an acid is combined with a base of equal strength, the result will most likely be

1

a neutral solution.

2

a stronger acid.

3

impossible to tell without testing the pH.

4

a stronger base

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Multiple Choice

Question image

Which of these pH values represent an acid?

1

4

2

8

3

10

4

12

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Multiple Choice

Question image

Milk is a very weak acid. What might its pH value be?

1

6.5

2

7.8

3

4.2

4

12.2

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