Chemistry Podcast

Showing posts with label General Science GK. Show all posts
Showing posts with label General Science GK. Show all posts

Saturday, 5 February 2022

What is Heat in Science | What is Temperature in Science | How to measure Temperature with Thermometer

What is Heat?

The exchange of energy due to difference in temperature is called heat. But as a noun we can say that the Heat is the quality of being hot or high temperature and to understand easily we can say that feeling of hot or warm is heat.



What is Heat in Science ?

The exchange of energy due to difference in temperature is called heat. We may also explain as, heat is the form of the energy that is moved between two substances at different temperatures. Means if two substances are in contact and one has 200K temperature and other have 100K temperature then the direction of energy flow is from the substance at the higher temperature to the substance of lower temperature. Means in above case heat flows from substance having 200k temperature to substance having 100K temperature.
Heat is a form of energy so heat is measured in units of energy, commonly calories or joules.

What is Temperature?

Temperature is the quantity of hotness or coldness of any substance. Simply we can say that Temperature is the measurement of how much an object is hot or cold.

What is Temperature in Science ?

Temperature is the quantity of hotness or coldness. Also in scientific way, temperature is explained as the average kinetic energy per molecule of a substance. Heat and Temperature (Temp, T) are two different terms and have different meanings so don’t get confuse between them.  Heat is energy while temperature is not energy. Heat is measured in Joules while temperature is measured in Celsius (C), Fahrenheit (F) or Kelvin (K). Symbol used for heat is Q while symbol used for temperature is T. SI unit of heat is Joule while SI unit of temperature is Kelvin.

Heat VS Temperature in Chemistry

Heat is the flow of energy from hot object to cold object while temperature is the measurement of how much an object is hot or cold. Heat is energy while temperature is not energy. Heat is measured in Joules while temperature is measured in Celsius (C), Fahrenheit (F) or Kelvin (K). Symbol used for heat is Q while symbol used for temperature is T. SI unit of heat is Joule while SI unit of temperature is Kelvin.

How to measure Temperature with Thermometer in degree Celsius & Fahrenheit

This video explains- 
How do you measure temperature with a thermometer?
and How do you read a Fahrenheit and Celsius thermometer?
After watching this video on temp., you can easily check temperature with thermometer.


Temperature is the measure of hotness or coldness of an object.
To convert temperatures from Fahrenheit to Celsius, 
use the formula C=(5/9)(F−32) 
and for Celsius to Fahrenheit, use the formula F=(9C/5)+32.

How to convert Temperature from one Unit to Another
By using below temperature conversion calculator, you can convert temperature from degree celsius to degree fahrenheit, degree celsius to kelvin. Similarly, from degree fahrenheit to degree celsius & degree fehrenheit to kelvin. Similarly, from kelvin to degree celsius and kelvin to degree fahrenheit.

Relationship between degree Celsius and degree Fahrenheit

    Use the formula ºC=(5/9)(ºF−32)

Relationship between degree Celsius and degree Kelvin

    Use the formula K = ºC + 273.15

Relationship between kelvin and degree Fahrenheit

   Use the formula K = 5/9 ºF + 459.67

Thursday, 3 February 2022

What are Essential Amino Acids | Definition, Structure, Foods & Infographics | Amino Acids

What are Essential Amino Acids | Definition, Structure, Foods, Infographics | Amino Acids

Definition of Amino Acid

Amino acid is a simple organic compound that contains a carboxyl (—COOH) and an amino (—NH2) group.

What are Amino Acids?

Amino acids are organic compounds containing carboxyl (—COOH) and amino (—NH2) functional group with side chain, this side chain is specific to amino acid. Carbon, Hydrogen, Oxygen and Nitrogen are some important element which present in amino acids. Some other elements may also present in side chain of some amino acids.

Importance of Amino Acids

As we all know that our body contains large amount of proteins also these proteins play important role in biological processes happening within human body. Amino acids are building blocks of these proteins means proteins contain amino acids.

Amino acids play key role in many body functions like cell structure, storage and transport of nutrients, proper functioning of organs, proper functioning of glands, proper functioning of arteries, proper functioning of tendons, healing of wounds, repairing tissues, removal of metabolic waste etc.

Amino Acids

There are so many amino acids present in nature but gene codes only 20 amino acid. Essential amino acids are type of amino acid which can not produced by human body so they are needed in dietary food. Two amino acids combines by a peptide bond to form dipeptide.

peptide bond

And amino acids further added to grow chain of peptides to form poly-peptide or protein.


Areas of Use of Amino Acids

1. Anti-aging

Supply of amino acids to the body provides repair treatment means nourish human skin, nails and hair result in delay aging process naturally. Supply of amino acids strengthens connective tissue to keep our skin smooth, shine, glowing and elastic. Creatine play very important role to keep skin healthy and this creatine is made up of amino acids like Arginine and Methionine. 

Glutamine amino acid is responsible to regulate acid-base balance as a result it supports healthy skin. Carnitine is a di-peptide containing two essential amino acids lysine and Methionine. Carnitine helps in burning fat to produce energy so also known as fat burner so also added in fitness and wellness program.

2. Arthritis

Amino acid Methionine helps in cartilage formation, also Methionine is essential amino acid so do not get produced within human body but need to be provided from outside i.e. from diet or food. 

Methionine also donates Sulphur which helps in joint cartilage creation. Along with amino acids vitamins and minerals are also required for healthy joints.

3. Cholesterol

Arginine amino acid helps in lowering the cholesterol level.

4. Diabetes

In diabetes person’s blood sugar level get high than normal level due to many reasons like pancreas do not produce enough insulin, insulin resistance etc. Amino acid Arginine help in reducing insulin resistance by increasing sensitivity of our body cells toward insulin so insulin get easily absorbed.

5. Fat Burning

Goal of weight loss is achieved by fat burning. Human growth hormone is an important fat burning hormone and amino acids Arginine, Glutamine and Methionine helps to secrete this hormone.

6. Hair and Nails

Amino acid Methionine prevents hair loss and strengthens nails. Amino acid Glutamine and Arginine increases hair growth.

What is Zwitterions

zwitterion
•    Below pH 2.2 amino acid have net charge of +1 due to the predominant form of amino acid have a neutral carboxylic acid functional group and a positive α-ammonium.
•    Above pH 9.4 amino acid have net charge of -1 due to the predominant form of amino acid have a negative carboxylate and neutral α-amino group.
•    At pH between 2.2 and 9.4 amino acid have net charge of ZERO due to the predominant form of amino acid have both a negative carboxylate and a positive α-ammonium functional group and this molecular state of amino acid is known as a Zwitterion.

What is Isoelectric Point

Isoelectric point is a pH at which molecule carry zero net electric charge. In case of amino acids at pH between 2.2 and 9.4 amino acid have net electric charge of ZERO so this range of pH gives Isoelectric Point of Amino Acids as shown in below image.


List of Amino Acids

Below is the chemistry infographics image of list of amino acids.

list of amino acids


What are Essential Amino Acids

Essential amino acids are amino acids which cannot be synthesized by the human body so these amino acids must be supplied in diet. The nine essential amino acids, which human body cannot synthesize are phenylalanine, Valine, Threonine, Tryptophan, Methionine, Leucine, Isoleucine, Lysine, and Histidine i.e. in one letter for amino acids are as follows- F, V, T, W, M, L, I, K, H.

Six additional amino acids are measured conditionally essential in the human diet. These six amino acids are Arginine, Cysteine, Glycine, Glutamine, Proline, and Tyrosine i.e. in one letter for amino acids are as follows- R, C, G, Q, P, Y.

Five amino acids are not essential in humans because they fully synthesized in the body. These five amino acids are Alanine, Aspartic Acid, Asparagine, Glutamic Acid, and Serine i.e. in one letter for amino acids are as follows- A, D, N, E, S.

List of Essential Amino Acids and Non-Essential Amino Acids

Below is the chemistry infographics image of list of essential amino acids and non essential amino acids.

List of Essential Amino Acids and list of Non-Essential Amino Acids


Amino Acids Structure Images

Below are the structure images of amino acids.





















Foods High in Essential Amino Acids

Essential amino acids are required daily in our diet to live healthy, So it is very important to include food having high amino acids in your diet. 

Amino acids are building blocks of protein. You can get enough essential amino acids by consuming foods rich in protein. Plant foods and animal foods both contain proteins. These given below are some foods name which are the best sources of dietary amino acids-
  • Soybean
  • Legumes
  • Beans
  • Nuts
  • Seeds
  • Mushrooms
  • Grains
  • Vegitables

  • Milk
  • Cheese
  • Yogurt
  • Cottage cheese
  • Turkey
  • Red meat
  • Eggs
  • Seafood
  • Fish
  • Chicken

Hope you enjoy learning of amino acids. You can also explore these interesting science topics-

Wednesday, 2 February 2022

Forensic Science Chemistry - Famous Forensic Scientists and Forensic Chemist

Forensic Science Chemistry - Famous Forensic Scientists and Forensic Chemist

In this post we will learn about forensic science and forensic drug chemistry. Also learn about fathers of various fields of forensic science and famous forensic scientists and forensic chemist.

In this post we will learn about forensic science and forensic drug chemistry. Also learn about fathers of various fields of forensic science and famous forensic scientists and forensic chemist.

Definition of Forensic Science

Forensic science is the application of scientific methods and techniques to matters under investigation by a court of law. Almost all branches of science may contributes to solve a crime scene, hence comes under forensic science.


Forensic Drug Chemistry

Forensic drug chemistry is the sub-branch of chemistry.  Forensic drug chemistry is used in identification of matter generally illegal drugs. The Forensic chemist examines the samples bring in forensic chemistry lab. Forensic chemist tries to find the name of matter or drug by examining the atoms and molecules in matter. Also find how these atoms and molecules interact and bond with each other. As we know, all matter or drug substance has a chemical signature (Spectrum, that you study under spectroscopy) and or some physical and chemical properties which are unique to only that substance. Forensic chemists use these physical and chemical properties to identify matter or drug substances using scientific techniques or methods. Findings by examining samples are presented as facts in court. Forensic chemistry covers analysis of any matter like illegal drugs, explosives, poisons etc.

 

What does Forensic Scientists and Forensic Chemist do ?

Forensic Scientists examine and analyze evidence or matter obtain from crime scenes. Forensic chemists conduct analysis of matter forensic chemistry. While other forensic scientists do other analysis like fingerprinting, handwriting analysis, DNA, trace evidence examination, fire and explosives examinations, forensic toxicology, digital evidence and many other analysis.  After doing all analysis they develop objective findings that can assist in the investigation and prosecution of person who has done crime or release the innocent person.


List of World Famous Forensic Scientists and Forensic Chemist 

Given below is the list of world famous forensic scientists & forensic chemists. These forensic chemists or forensic experts made great contribution to solve mysterious crime scenes and help in providing justice.

Dr. William Bass (United States)
Dr. Joseph Bell (Scotland)
Dr. Edmond Locard (France)
Pakkiriswamy Chandra Sekharan (India)
Dr. Henry Faulds (United Kingdom)
William R. Maples (United States)
Henry Chang-Yu Lee (China)
Frances Glessner Lee (United States)
Robert P. Spalding (United States)

List of Famous Indian Forensic Scientists and Forensic Chemist 

Given below is the list of popular forensic chemist and forensic scientists in India. These are very popular scientists in India, who made great contribution to solve mysterious crime scenes & help in providing justice.
Pakkiriswamy Chandra Sekharan
Anil Aggrawal
Tirath Das Dogra
Bhooshana Rao
Chandre Gowda
J. M. Vyas
Yusuf Matcheswalla
K. S. Narayan Reddy
Kewal Krishan

List of Fathers of Various Fields of Forensic Science

Given below is the list of fathers of various fields of forensic science.

Fields of Forensic Science

Name of Scientists or Father of

Father of Forensic Science

Bernard Spilsbury

Father of Fingerprints

Francis Galton

Father of Toxicology

Paracelsus

Modern Father of Toxicology

Mathieu Orfila

Father of Forensic Odontology

Oscar Amoedo

Father of Criminal Identification System

Alphonse Bertillon

Father of DNA Fingerprinting

Alec John Jeffreys

Father of Criminology

Cesare Lombroso

Father of Forensic Medicine

Paolo Zacchia

Father of Forensic photography

Alphonse Bertillon

Father of Forensic Psychology

Hugo Munsterberg

Father of Criminalistics

Hans Gross

Father of Firearm and tool mark examination

Calvin H. Goddard

Father of Explosives

Alfred Nobel

Father of Bloodstain Pattern Analysis

Dr. Eduard Piotrowski

Father of Computer Forensics

Michael Anderson


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Saturday, 29 January 2022

Science Quiz on Scientific Instruments Part 2 - Scientific Instrument Quiz

 Science Quiz on Scientific Instruments Part 2 - Scientific Instrument Quiz

This is basic Science Quiz Questions and Answers on Scientific Instruments. These are very important questions. These MCQs are all frequently asked in many competitive exams like UPSC, Bank PO, Bank Clerk, Government Exams.

These MCQs on Scientific Instruments help you in Scientific Instruments mock test or any Scientific Instruments online test. Start solving MCQ on Scientific devices & also visit Science Quiz pages which covers almost all MCQs. 

MCQ-1.  Structure of crystals is measured by :

  Crystal Gauge
  Diffractometer
  Diffractoscale
  Dynamometer

MCQ-2.  Size, speed, and velocity of raindrops is measured by :

  Rainmeter
  Watermeter
  Rain Gauge
  Disdrometer

MCQ-3.  Volume changes caused by any physical or chemical process is measured by :

  Dilatometer
  Caliper
  Densimeter
  Volume Sensor

MCQ-4.  ______ is used in measurement of rate of evaporation :

  Barometer
  Heatingmeter
  Evaporationmeter
  Evaporimeter

MCQ-5.  Exposure to hazards, especially radiation is measured by :

  Polometer
  Bolometer
  Dosimeter
  Radiometer

MCQ-6.  ____ device is used to measure force,torque or power :

  Dynamometer
  Forcealyzer
  Deltameter
  Fathometer

MCQ-7.  _______ is use to measure specific gravity of oils. :

  Actinometer
  Elaeometer
  Specificgravity Analyser
  Densimeter

MCQ-8.  Device use to measure pitch of musical notes is :

  Electronicmeter
  Electronic tuner
  DJ
  Buffer

MCQ-9.  ______ is use to measure change in volume of gas mixture following combustion :

  Gasometer
  Eudiometer
  Electronicmeter
  Electronic tuner

MCQ-10.  Refractive index, dielectric function and thickness of thin films is measured by :

  Refractometer
  Ellipsometer
  Densimeter
  Dielectrometer

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<= Science Quiz on Scientific Instruments Part 1

Science Quiz on Scientific Instruments Part 1

 Science Quiz on Scientific Instruments Part 1

Science General Knowledge

Science GK by www.ChemistryNotesInfo.com

This Science GK on Scientific Instruments part1 is based on different measuring devices or measuring instruments used in the field of Physics, chemistry and science.
This Science Quiz contains important GK question answers. These MCQ question answers help you to increase your general knowledge. These are important questions asked in many state & central government exams like 
Civil Services Examination (CSE), Indian Economic Service Examination (IESE), Staff Selection Commission (SSC), Combined Defense Services Examination (CDSE), National Defense Academy Examination (NDAE), Food Corporation of India Examination (FCIE), IBPS PO Examination, State Bank of India - Probationary Officers (SBIPO), Joint Entrance Examination, NEET, GATE, CEED, LSAT, XAT, CAT, UPSC, and many more...

MCQ-1.  _________ is use to measure rain :

  Rain Gauge
  Rainmeter
  Rain Scale
  None of the above

MCQ-2.  Alcoholic strength of liquids is measured by :

  Alcoholmeter
  Alcohol Gauge
  Alcohol Scale
  All of the above

MCQ-3.  Radiation of item is measured by :

  Curiemeter
  Caliper
  Dosimeter
  Radiationmeter

MCQ-4.  ______ is used in measurement of tanning liquors used in tanning leather :

  Barometer
  Barkometer
  Tanningmeter
  Leathermeter

MCQ-5.  Electromagnetic radiation is measured by :

  Polometer
  Bolometer
  lectrometer
  Radiometer

MCQ-6.  ____ device is used to measure breath alcohol content :

  Breathmeter
  Breathalyzer
  Breathchecker
  Alcometer

MCQ-7.  _______ is use to measure heat of chemical reactions :

  Actinometer
  Heatchecker
  Heat Analyser
  Calorimeter

MCQ-8.  Device use to measure color is :

  Coloranalyzer
  Alcohol
  Colorimeter
  Colorsensor

MCQ-9.  ______ is use to measure specific gravity of liquids :

  Density Analyzer
  Gravimeter
  Densimeter
  Potentiometer

MCQ-10.  Degree of darkness in the photographic and/or semitransparent material is measured by :

  Electrometer
  Gravimeter
  Densimeter
  Densitometer



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<= Science Quiz Part 11

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