Podcast
Questions and Answers
Acids have a ______ taste.
Acids have a ______ taste.
sour
Acids turn blue litmus paper ______.
Acids turn blue litmus paper ______.
red
Bases turn red litmus paper ______.
Bases turn red litmus paper ______.
blue
[Blank] is a natural indicator extracted from lichen.
[Blank] is a natural indicator extracted from lichen.
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Turmeric is a ______ indicator.
Turmeric is a ______ indicator.
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Soap is ______ in nature.
Soap is ______ in nature.
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Methyl orange is a ______ indicator.
Methyl orange is a ______ indicator.
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Phenolphthalein is a ______ indicator.
Phenolphthalein is a ______ indicator.
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Acids and bases ______ each other’s effects.
Acids and bases ______ each other’s effects.
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When soap, which is ______ in nature, is scrubbed on a stain of curry on a white cloth, it becomes reddish-brown.
When soap, which is ______ in nature, is scrubbed on a stain of curry on a white cloth, it becomes reddish-brown.
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The ability of acids and bases to ______ each other’s effect allows one to find remedies for acidity.
The ability of acids and bases to ______ each other’s effect allows one to find remedies for acidity.
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[Blank] is a natural indicator that turns reddish-brown in the presence of a base.
[Blank] is a natural indicator that turns reddish-brown in the presence of a base.
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Litmus solution is extracted from ______, a plant belonging to the division Thallophyta.
Litmus solution is extracted from ______, a plant belonging to the division Thallophyta.
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Acids change the colour of blue litmus to ______, while bases change the colour of red litmus to blue.
Acids change the colour of blue litmus to ______, while bases change the colour of red litmus to blue.
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[Blank] indicators, such as methyl orange and phenolphthalein, are used to test for acids and bases.
[Blank] indicators, such as methyl orange and phenolphthalein, are used to test for acids and bases.
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When litmus solution is neither acidic nor basic, its color is ______.
When litmus solution is neither acidic nor basic, its color is ______.
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Materials like red cabbage leaves and coloured petals of flowers such as Hydrangea act as acid-base ______.
Materials like red cabbage leaves and coloured petals of flowers such as Hydrangea act as acid-base ______.
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Acids are ______ in taste, whereas bases are bitter.
Acids are ______ in taste, whereas bases are bitter.
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Litmus is a ______ indicator used to test if a solution is acidic or basic.
Litmus is a ______ indicator used to test if a solution is acidic or basic.
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The ability of acids and bases to ______ each other’s effects is a key concept in understanding neutralization reactions.
The ability of acids and bases to ______ each other’s effects is a key concept in understanding neutralization reactions.
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Litmus is a natural indicator extracted from ______, a plant belonging to the division Thallophyta.
Litmus is a natural indicator extracted from ______, a plant belonging to the division Thallophyta.
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When a curry stain on a white cloth turns reddish-brown upon soap application, it indicates the ______ nature of soap.
When a curry stain on a white cloth turns reddish-brown upon soap application, it indicates the ______ nature of soap.
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Acids are known to change the color of blue litmus to ______.
Acids are known to change the color of blue litmus to ______.
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Bases are known to change the color of red litmus to ______.
Bases are known to change the color of red litmus to ______.
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[Blank] is a natural indicator, that when scrubbed on a curry stain, will turn the stain reddish-brown.
[Blank] is a natural indicator, that when scrubbed on a curry stain, will turn the stain reddish-brown.
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[Blank] solution is extracted from lichen, a plant belonging to the division Thallophyta.
[Blank] solution is extracted from lichen, a plant belonging to the division Thallophyta.
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Acids/bases indicators are sometimes simply called ______.
Acids/bases indicators are sometimes simply called ______.
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In the context of acid-base chemistry, the phenomenon where acids and bases counteract each other's effects, leading to a resultant solution that is neither distinctly acidic nor basic, is termed ______.
In the context of acid-base chemistry, the phenomenon where acids and bases counteract each other's effects, leading to a resultant solution that is neither distinctly acidic nor basic, is termed ______.
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The qualitative tool used to visually determine the acidity or basicity of a solution, often involving a color change contingent upon the hydrogen ion concentration, is referred to as an ______.
The qualitative tool used to visually determine the acidity or basicity of a solution, often involving a color change contingent upon the hydrogen ion concentration, is referred to as an ______.
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Certain plant-derived substances, such as the dye extracted from lichens belonging to the Thallophyta division, and used to visually determine the acidity or basicity of a solution, is referred to as ______.
Certain plant-derived substances, such as the dye extracted from lichens belonging to the Thallophyta division, and used to visually determine the acidity or basicity of a solution, is referred to as ______.
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A common household substance that causes a reddish-brown stain from curry on white cloth to revert to yellow when washed off with plenty of water is ______.
A common household substance that causes a reddish-brown stain from curry on white cloth to revert to yellow when washed off with plenty of water is ______.
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Methyl orange and phenolphthalein, synthesized in laboratories, are examples of ______ indicators that aid in the quantitative determination of a solution's pH.
Methyl orange and phenolphthalein, synthesized in laboratories, are examples of ______ indicators that aid in the quantitative determination of a solution's pH.
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The division of plants containing lichens, from which litmus is extracted, is known as ______.
The division of plants containing lichens, from which litmus is extracted, is known as ______.
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Compounds whose solutions have a pH lower than 7 are ______.
Compounds whose solutions have a pH lower than 7 are ______.
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Those compounds whose solutions have a pH higher than 7 are called ______.
Those compounds whose solutions have a pH higher than 7 are called ______.
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Indicators such as red cabbage leaves, turmeric and coloured petals of some flowers are called ______ indicators.
Indicators such as red cabbage leaves, turmeric and coloured petals of some flowers are called ______ indicators.
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A ______ is formed when an acid reacts with a base.
A ______ is formed when an acid reacts with a base.
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Flashcards
Acids
Acids
Substances that taste sour and turn blue litmus red.
Bases
Bases
Substances that taste bitter and turn red litmus blue.
Litmus Test
Litmus Test
A method to determine acidity or basicity using litmus paper.
Natural Indicators
Natural Indicators
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Synthetic Indicators
Synthetic Indicators
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Acid-Base Neutralization
Acid-Base Neutralization
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Litmus Solution
Litmus Solution
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Turmeric as Indicator
Turmeric as Indicator
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Indicators
Indicators
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pH Scale
pH Scale
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Acidity Remedy
Acidity Remedy
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Blue Litmus
Blue Litmus
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Red Litmus
Red Litmus
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Curry Stain Reaction
Curry Stain Reaction
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Litmus Color Neutral
Litmus Color Neutral
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Turmeric Indicator
Turmeric Indicator
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Red Cabbage as Indicator
Red Cabbage as Indicator
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Phenolphthalein
Phenolphthalein
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Natural Indicator Examples
Natural Indicator Examples
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Acid-Base Interaction
Acid-Base Interaction
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Acidic Taste
Acidic Taste
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Basic Taste
Basic Taste
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Litmus Colors
Litmus Colors
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Turmeric Stain Reaction
Turmeric Stain Reaction
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Synthetic Indicator Use
Synthetic Indicator Use
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Acid-Base Indicators
Acid-Base Indicators
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Litmus Solution Composition
Litmus Solution Composition
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pH Scale Importance
pH Scale Importance
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Curry Stain Soap Effect
Curry Stain Soap Effect
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Red Cabbage Indicator
Red Cabbage Indicator
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Acidity Problem
Acidity Problem
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Litmus Color Change
Litmus Color Change
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Acidic vs Basic Tastes
Acidic vs Basic Tastes
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Litmus Extraction Source
Litmus Extraction Source
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Indicators' Role
Indicators' Role
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Turmeric Response
Turmeric Response
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Red Cabbage Color Change
Red Cabbage Color Change
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Study Notes
Acids, Bases, and Salts
- Acids have a sour taste and turn blue litmus red.
- Bases have a bitter taste and turn red litmus blue.
- Litmus is a natural indicator, changing colour based on whether a substance is acidic or basic.
- Turmeric is another natural indicator. A curry stain on white cloth turns reddish-brown when scrubbed with soap (basic) and yellow again when washed.
- Synthetic indicators like methyl orange and phenolphthalein can also test for acids and bases.
- Acids and bases can neutralize each other.
- Litmus solution is a purple dye extracted from lichen.
- Other natural indicators include red cabbage leaves, turmeric, and flower petals (e.g., Hydrangea, Petunia, Geranium).
- These are also called acid-base indicators or simply indicators.
- Lemon juice, vinegar, or baking soda solution can be used to remedy acidity.
- Acids are sour in taste and change the color of blue litmus to red.
- Bases are bitter in taste and change the color of red litmus to blue.
- The sour and bitter tastes of food are due to acids and bases respectively.
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Description
Test your knowledge on acids, bases, and salts with this quiz! Explore the properties of acids and bases, the role of indicators, and how they neutralize each other. Challenge yourself on various natural and synthetic indicators in chemistry.
