B2 verb #15,000 رایج‌ترین 2 دقیقه مطالعه

alkaline

Alkaline describes a substance with a pH higher than 7, which acts as the opposite of acidic.

Explanation at your level:

Alkaline is a science word. It means something is not acidic. You can find it in batteries. It is good to know if you study plants or water.

When you talk about chemistry, you use the word alkaline. It describes liquids that are the opposite of acid. For example, some soap is alkaline. It helps to keep things clean.

The word alkaline describes a chemical state. If a substance has a pH level higher than 7, it is alkaline. Gardeners often test their soil to see if it is too alkaline for their flowers.

In scientific contexts, alkaline is used to describe substances that can neutralize acids. It is a key term in environmental science and nutrition. You might hear about an 'alkaline diet' or 'alkaline water' in health magazines.

Alkaline is a technical adjective denoting a basic chemical property. Beyond its literal use in chemistry, it is frequently employed in agricultural discourse regarding soil pH management. Understanding the nuance between acidic and alkaline environments is essential for advanced scientific literacy.

The etymology of alkaline, rooted in the Arabic 'al-qali,' reflects the historical intersection of alchemy and modern chemistry. In advanced academic writing, it serves as a precise descriptor for substances that exhibit basicity. Its usage spans from industrial chemical processes to complex biological buffering systems, making it a cornerstone of technical terminology.

واژه در 30 ثانیه

  • Alkaline means pH > 7.
  • It is the opposite of acidic.
  • Used for batteries and soil.
  • Commonly used in science.

When we talk about alkaline, we are diving into the world of chemistry! At its heart, this word describes substances that have a pH level greater than 7. If you remember your school science experiments, you know that the pH scale measures how acidic or basic a liquid is.

Think of alkaline as the perfect partner to acidity. While acids can be sharp or sour, alkaline substances—often called bases—can help neutralize those acids. You will often hear this term when people talk about gardening, water quality, or even the batteries in your remote control!

The history of the word alkaline is actually quite fascinating! It comes from the Arabic word al-qali, which means 'the calcined ashes.' Historically, people would soak plant ashes in water to create a substance used for making soap.

This Arabic root traveled through medieval Latin and eventually into French and English. It is a great example of how ancient chemistry practices from the Middle East shaped the scientific vocabulary we use today. It reminds us that science has always been a global, evolving conversation.

You will most commonly see alkaline used in scientific or technical contexts. It is a very precise term, so it is rarely used in casual, everyday conversation unless you are discussing health trends or household items.

Commonly, you will hear it paired with nouns like soil, water, or batteries. For example, a gardener might say the soil is too alkaline, meaning it lacks the acidity needed for certain plants like blueberries to thrive.

While alkaline is a technical term, it appears in phrases related to balance. 1. Alkaline diet: A lifestyle trend focusing on pH-balancing foods. 2. Neutralize the acidity: Often used metaphorically for solving a tense situation. 3. Base level: Referring to the foundation of a chemical state. 4. Acid-base balance: A critical concept in biology. 5. Alkaline reserve: A term used in medicine for buffering capacity.

The word alkaline is an adjective, so it describes nouns. In British English, it is often pronounced with a long 'i' sound at the end, while American English often uses a short 'i' or 'uh' sound. The IPA is /ˈælkəlaɪn/.

It doesn't have a plural form because adjectives in English don't change. You can use it before a noun, like 'alkaline soil,' or after a linking verb, like 'the water is alkaline.' It rhymes with words like fine, line, and shine.

Fun Fact

The word comes from the process of extracting salts from plant ashes.

Pronunciation Guide

UK /ˈalkəlʌɪn/

sounds like al-kuh-line

US /ˈælkəlaɪn/

sounds like al-kuh-line

Common Errors

  • missing the 'k' sound
  • stressing the second syllable
  • pronouncing the 'i' as 'ee'

Rhymes With

fine line shine mine vine

Difficulty Rating

خواندن 2/5

Moderate

Writing 2/5

Moderate

Speaking 2/5

Moderate

شنیدن 2/5

Moderate

What to Learn Next

Prerequisites

acid pH liquid

Learn Next

neutralize base titration

پیشرفته

alkalinity buffering geochemistry

Grammar to Know

Adjective placement

The soil is alkaline.

Article usage

An alkaline solution.

Comparative adjectives

More alkaline than before.

Examples by Level

1

This is an alkaline battery.

battery = power source

adjective before noun

2

The water is alkaline.

water = liquid

adjective after verb

3

It is not acidic.

not = opposite

negation

4

Soap is alkaline.

soap = cleaning product

simple subject

5

The soil is alkaline.

soil = dirt

descriptive

6

Check the pH level.

check = look at

imperative

7

It is a base.

base = alkaline

noun usage

8

Is it alkaline?

question form

interrogative

1

The plants need less alkaline soil.

2

This water has an alkaline pH.

3

Alkaline batteries last a long time.

4

The solution is slightly alkaline.

5

He tested the liquid for alkaline properties.

6

Most soaps are naturally alkaline.

7

The pool water became too alkaline.

8

Avoid using too much alkaline cleaner.

1

The farmer added sulfur to lower the alkaline levels in the soil.

2

Many health enthusiasts drink alkaline water daily.

3

The experiment showed the substance was highly alkaline.

4

Alkaline earth metals are found in the second column of the periodic table.

5

The chemist measured the alkaline concentration of the sample.

6

The lake water is naturally alkaline due to the rocks.

7

She prefers using alkaline-based detergents for her laundry.

8

The reaction was neutralized by adding an alkaline solution.

1

The alkaline nature of the soil prevented the roses from growing.

2

Engineers must monitor the alkaline levels in the cooling system.

3

The alkaline reserve in the blood helps maintain a stable pH.

4

He argued that an alkaline diet could improve overall health.

5

The industrial waste was treated to reduce its alkaline content.

6

The geologist identified the rock as being rich in alkaline minerals.

7

The alkaline environment is hostile to certain types of bacteria.

8

We need to ensure the solution remains alkaline throughout the process.

1

The alkaline buffering capacity of the lake protects it from acid rain.

2

The geochemical analysis revealed significant alkaline deposits in the region.

3

The physiological regulation of blood pH relies on an alkaline buffer system.

4

The research focuses on the impact of alkaline runoff on aquatic ecosystems.

5

The synthesis requires an alkaline catalyst to proceed efficiently.

6

The soil's alkaline status is a critical factor for crop selection.

7

The alkaline-rich environment promotes specific enzymatic activity.

8

The study examines the long-term effects of alkaline irrigation on soil structure.

1

The alkaline hydrolysis process is increasingly used in sustainable waste management.

2

The mineralogy of the site is characterized by an alkaline volcanic composition.

3

The alkaline earth elements exhibit distinct periodic trends in reactivity.

4

The clinical trial investigated the efficacy of alkaline supplementation in metabolic health.

5

The alkaline-saline environment presents unique challenges for local flora.

6

The electrochemical potential is influenced by the alkaline nature of the electrolyte.

7

The historical development of alkaline chemistry is rooted in early industrial soap production.

8

The titration curve confirmed the presence of an alkaline compound.

مترادف‌ها

basic non-acidic caustic alkalic antacid

ترکیب‌های رایج

alkaline soil
alkaline water
alkaline battery
highly alkaline
slightly alkaline
alkaline solution
alkaline earth
alkaline environment
alkaline pH
alkaline waste

Idioms & Expressions

"alkaline diet"

A diet focusing on low-acid foods

He started an alkaline diet.

casual

"neutralize the acid"

To make something less acidic

We used a base to neutralize the acid.

neutral

"pH balance"

The state of being neither too acidic nor too alkaline

Maintaining the pH balance is key.

neutral

"base level"

The starting point

We need to find the base level.

neutral

"acid-base reaction"

A standard chemical interaction

The experiment was an acid-base reaction.

formal

Easily Confused

alkaline vs acidic

they are opposites

pH level

Acidic is <7, alkaline is >7.

alkaline vs alkali

same root

noun vs adjective

Alkali is the substance; alkaline is the property.

alkaline vs alkaloid

similar sound

biological vs chemical

Alkaloids are plant compounds.

alkaline vs basic

synonym

register

Basic is more general.

Sentence Patterns

A1

The [noun] is alkaline.

The water is alkaline.

A2

Alkaline [noun]...

Alkaline soil is good.

B1

It is highly alkaline.

The lake is highly alkaline.

B1

The solution is slightly alkaline.

The solution is slightly alkaline.

C1

Due to its alkaline nature...

Due to its alkaline nature, it reacts.

خانواده کلمه

Nouns

alkali a basic substance

Verbs

alkalize to make alkaline

Adjectives

alkaline having basic properties

مرتبط

pH the scale used to measure alkalinity

How to Use It

frequency

7

Formality Scale

scientific neutral casual slang

اشتباهات رایج

Calling everything 'alkaline' Use 'basic' for general chemistry
Alkaline is a specific type of base.
Confusing alkaline with acidic pH > 7 is alkaline
They are opposites.
Using it as a verb Use 'alkalize'
Alkaline is an adjective.
Misspelling as 'alkaline' Check the spelling
Commonly misspelled as 'alcaline'.
Assuming it means 'healthy' It just means pH > 7
Not all alkaline things are healthy.

Tips

💡

Memory Palace

Imagine a giant 'A' for Alkaline in a garden.

💡

Native Speakers

They use it mostly for batteries and soil.

🌍

Health Trends

Be aware of 'alkaline diet' marketing.

💡

Adjective Rule

Always use it to describe a noun.

💡

Say It Right

Focus on the 'line' rhyme.

💡

Avoid 'Alcaline'

It is always 'alkaline'.

💡

History

It comes from Arabic ashes.

💡

Flashcards

Use pictures of batteries.

💡

pH Scale

Remember 7 is neutral.

💡

Academic Tone

Use it in lab reports.

Memorize It

Mnemonic

Alkaline... Al-KALI-ne... Think of 'KALI' as the base of the word.

Visual Association

A battery labeled 'Alkaline' sitting in a garden.

Word Web

pH acid base neutralize chemistry

چالش

Test the pH of your tap water.

ریشه کلمه

Arabic

Original meaning: the calcined ashes

بافت فرهنگی

None, it is a scientific term.

Used frequently in health, gardening, and battery marketing.

Often mentioned in health and wellness books.

Practice in Real Life

Real-World Contexts

Gardening

  • alkaline soil
  • pH level
  • lime application

Chemistry Lab

  • alkaline solution
  • neutralize acid
  • titration

Health

  • alkaline water
  • pH balance
  • dietary intake

Shopping

  • alkaline battery
  • long-lasting
  • power source

Conversation Starters

"Have you ever tested the pH of your garden soil?"

"Do you think alkaline water is worth the price?"

"What do you know about the pH scale?"

"Why do some batteries last longer than others?"

"Have you heard of the alkaline diet?"

Journal Prompts

Write about a time you used a battery.

Describe the importance of pH in nature.

Explain the difference between acid and base.

Why is it important to know the pH of water?

سوالات متداول

8 سوال

Yes, in chemistry, they are synonymous.

Yes, it is safe, though health benefits are debated.

Use a pH strip or meter.

Acidic.

No, but alkaline earth metals exist.

Not necessarily; it just describes chemical pH.

A-L-K-A-L-I-N-E.

No, it is an adjective.

خودت رو بسنج

fill blank A1

The battery is an ___ battery.

درسته! نه دقیقاً. پاسخ صحیح: alkaline

Alkaline is the standard type of battery.

multiple choice A2

What is the opposite of acidic?

درسته! نه دقیقاً. پاسخ صحیح: alkaline

Alkaline is the chemical opposite of acidic.

true false B1

Alkaline substances have a pH lower than 7.

درسته! نه دقیقاً. پاسخ صحیح: نادرست

They have a pH higher than 7.

match pairs B1

Word

معنی

All matched!

These are the standard definitions.

sentence order B2

کلمات زیر رو بزن تا جمله رو بسازی
درسته! نه دقیقاً. پاسخ صحیح:

The soil is alkaline.

امتیاز: /5

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