Difference Wiki

Acidic vs. Alkaline: What's the Difference?

Edited by Huma Saeed || By Sumera Saeed || Published on December 15, 2023
Acidic substances have a pH less than 7, often taste sour, and turn litmus paper red; alkaline substances, with a pH above 7, taste bitter and turn litmus paper blue.

Key Differences

Acidic substances have a pH value below 7, indicating a higher concentration of hydrogen ions. This makes them corrosive and reactive, especially with metals. Alkaline substances, also known as bases, have a pH value above 7, indicating lower concentrations of hydrogen ions and a higher concentration of hydroxide ions.
Sumera Saeed
Dec 15, 2023
In terms of taste, acidic substances often have a sour flavor, characteristic of foods like lemons and vinegar. Alkaline substances, on the other hand, tend to have a bitter taste, which is noticeable in foods like baking soda and certain leafy greens.
Sumera Saeed
Dec 15, 2023
From a chemical reaction standpoint, acidic substances readily donate hydrogen ions in reactions, a hallmark of their chemical behavior. Alkaline substances, in contrast, are known for accepting hydrogen ions and often producing hydroxide ions in reactions.
Huma Saeed
Dec 15, 2023
In environmental contexts, acidic substances can contribute to phenomena like acid rain, which impacts soil and aquatic ecosystems. Alkaline substances, while less often discussed in environmental impacts, can also affect ecosystems, particularly by altering soil pH and affecting plant growth.
Aimie Carlson
Dec 15, 2023
Commonly, acidic solutions turn blue litmus paper red, a classic test in chemistry. Conversely, alkaline solutions turn red litmus paper blue, which is a simple yet effective way to differentiate between the two.
Sumera Saeed
Dec 15, 2023
ADVERTISEMENT

Comparison Chart

PH Value

Below 7
Above 7
Sumera Saeed
Dec 15, 2023

Taste

Sour
Bitter
Sumera Saeed
Dec 15, 2023

Chemical Behavior

Donate hydrogen ions
Accept hydrogen ions, produce hydroxide ions
Sumera Saeed
Dec 15, 2023

Environmental Impact

Contributes to acid rain
Alters soil pH, affects plant growth
Janet White
Dec 15, 2023

Litmus Test

Turns blue litmus paper red
Turns red litmus paper blue
Sumera Saeed
Dec 15, 2023
ADVERTISEMENT

Acidic and Alkaline Definitions

Acidic

Acidic substances often have a sour taste.
Lemons are acidic, contributing to their sour flavor.
Janet White
Nov 27, 2023

Alkaline

Alkaline substances usually have a bitter taste.
Baking soda is alkaline and has a distinct bitter flavor.
Janet White
Nov 27, 2023

Acidic

Acidic environments can accelerate metal corrosion.
Battery acid is acidic and can corrode metal quickly.
Harlon Moss
Nov 27, 2023

Alkaline

Alkaline describes a substance with a pH above 7.
Soap is alkaline and effective in cleaning greasy stains.
Sumera Saeed
Nov 27, 2023

Acidic

Acidic rain, caused by pollution, harms ecosystems.
Acidic rain damages forests and aquatic habitats.
Sumera Saeed
Nov 27, 2023

Alkaline

Alkaline soils can affect plant nutrient availability.
Alkaline soil requires special plants that can tolerate high pH.
Sumera Saeed
Nov 27, 2023

Acidic

Acidic refers to a substance with a pH less than 7.
Vinegar is acidic and used in various culinary applications.
Aimie Carlson
Nov 27, 2023

Alkaline

In chemistry, alkaline solutions accept hydrogen ions.
Alkaline solutions are used to neutralize acidic spills.
Aimie Carlson
Nov 27, 2023

Acidic

In chemistry, acidic solutions donate hydrogen ions.
Acidic compounds are crucial in many chemical reactions.
Sumera Saeed
Nov 27, 2023

Alkaline

Alkaline substances are often used in cleaning agents.
Many household cleaners are alkaline to dissolve dirt and grease.
Harlon Moss
Nov 27, 2023

Acidic

Acid.
Sumera Saeed
Nov 23, 2023

Alkaline

Of, relating to, or containing an alkali.
Sumera Saeed
Nov 23, 2023

Acidic

Tending to form an acid.
Sumera Saeed
Nov 23, 2023

Alkaline

Having a pH greater than 7.
Sumera Saeed
Nov 23, 2023

Acidic

(chemistry) Having a pH less than 7, or being sour, or having the strength to neutralize alkalis, or turning a litmus paper red.
Sumera Saeed
Nov 23, 2023

Alkaline

Having a relatively low concentration of hydrogen ions.
Sumera Saeed
Nov 23, 2023

Acidic

(mineralogy) Containing a high percentage of silica; opposed to basic.
Sumera Saeed
Nov 23, 2023

Alkaline

Of or relating to a common disposable battery made of zinc and manganese dioxide.
Sumera Saeed
Nov 23, 2023

Acidic

Of or relating to acid; having the character of an acid.
An acidic solution
Sumera Saeed
Nov 23, 2023

Alkaline

Of, or relating to an alkali, one of a class of caustic bases.
Sumera Saeed
Nov 23, 2023

Acidic

Containing a high percentage of silica; - opposed to basic.
Sumera Saeed
Nov 23, 2023

Alkaline

(chemistry) Having a pH greater than 7.
Sumera Saeed
Nov 23, 2023

Acidic

Of or relating to acid; having the character of an acid, as an acidic solution.
Sumera Saeed
Nov 23, 2023

Alkaline

An alkaline battery.
Sumera Saeed
Nov 23, 2023

Acidic

Having characteristics of both an acid and a base and capable of reacting as either
Sumera Saeed
Nov 23, 2023

Alkaline

Of or pertaining to an alkali or to alkalies; having the properties of an alkali.
Sumera Saeed
Nov 23, 2023

Acidic

Tasting sour like acid
Sumera Saeed
Nov 23, 2023

Alkaline

Relating to or containing an alkali; having a pH greater than 7;
Alkaline soils derived from chalk or limestone
Sumera Saeed
Nov 23, 2023

FAQs

Are acidic substances dangerous?

Some acidic substances can be corrosive and harmful, requiring careful handling.
Sumera Saeed
Dec 15, 2023

Are alkaline substances safe?

Alkaline substances can be caustic and harmful, especially at high pH levels.
Aimie Carlson
Dec 15, 2023

What does acidic mean?

Acidic refers to substances with a pH less than 7, often sour and corrosive.
Sumera Saeed
Dec 15, 2023

Can acidic foods affect health?

Consuming too many acidic foods may affect digestive health and tooth enamel.
Sumera Saeed
Dec 15, 2023

What are common acidic household items?

Vinegar, lemon juice, and battery acid are common acidic items.
Aimie Carlson
Dec 15, 2023

What does alkaline mean?

Alkaline describes substances with a pH above 7, typically bitter and basic.
Huma Saeed
Dec 15, 2023

How do you measure acidity?

Acidity is measured using pH scales, litmus paper, or pH meters.
Harlon Moss
Dec 15, 2023

Are alkaline diets beneficial?

Alkaline diets are claimed to benefit health, but scientific evidence is mixed.
Harlon Moss
Dec 15, 2023

What are common alkaline household items?

Baking soda, soap, and ammonia are common alkaline items.
Sumera Saeed
Dec 15, 2023

Are acidic substances good for cleaning?

Acidic substances can remove mineral deposits and stains effectively.
Sumera Saeed
Dec 15, 2023

Do acidic substances react with bases?

Yes, acidic substances react with bases to form salt and water.
Janet White
Dec 15, 2023

Do alkaline substances react with acids?

Yes, alkaline substances react with acids in neutralization reactions.
Sumera Saeed
Dec 15, 2023

How is alkalinity measured?

Alkalinity is measured using pH scales, indicators, or titration methods.
Janet White
Dec 15, 2023

What is an acidic solution's effect on metals?

Acidic solutions can corrode metals, causing rust and deterioration.
Janet White
Dec 15, 2023

Are alkaline substances effective in laundry detergents?

Yes, alkaline substances in detergents help remove grease and stains.
Janet White
Dec 15, 2023

Can alkaline substances neutralize acids?

Yes, alkaline substances can neutralize acids, often used in antacids.
Aimie Carlson
Dec 15, 2023

How does alkalinity impact water quality?

High alkalinity in water can affect taste and plumbing over time.
Sumera Saeed
Dec 15, 2023

What is the effect of alkaline solutions on organic matter?

Alkaline solutions can break down organic matter, used in cleaning.
Sumera Saeed
Dec 15, 2023

Can acidity affect plant growth?

High acidity in soil can harm plant growth and nutrient absorption.
Aimie Carlson
Dec 15, 2023

Can acidic substances neutralize alkaline substances?

Yes, acidic substances can neutralize alkaline substances in a neutralization reaction.
Sumera Saeed
Dec 15, 2023
About Author
Written by
Sumera Saeed
Sumera is an experienced content writer and editor with a niche in comparative analysis. At Diffeence Wiki, she crafts clear and unbiased comparisons to guide readers in making informed decisions. With a dedication to thorough research and quality, Sumera's work stands out in the digital realm. Off the clock, she enjoys reading and exploring diverse cultures.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

Trending Comparisons

Popular Comparisons

New Comparisons