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A Bronsted-Lowery acid is substance that is a proton donor, whereas a Bronsted-Lowery base is a substance that is a proton acceptor. #scienceonline24

According to Arrhenius concept an Acid is chemical substance that dissociates in aqueous solution to give hydrogen ions ( H ). According to Arrhenius concept Base is a chemical substance that dissociates in aqueous solution to give hydroxide ions ( OH- ).

Acids : acids have sour taste. acids turns blue litmus paper red. Bases : Bases have bitter taste and slippery to touch. It turns red litmus paper blue. #scienceonline24

Acid : Acids have sour taste. Base : Bases have bitter taste. Salts : Salts are formed by the reaction of an acid and base. #scienceonline24

Isotopes are used in chemical, agricultural and medical research for diagnosing and treatment of diseases.

Atoms of the same element which have same atomic number but different mass number is called isotopes. #scienceonline24

The distribution of electrons around the nucleus in orbits or shells is called electronic configuration. Shell : According to Bohr's atomic Theory, electrons are revolving around the nucleus in one of the fixed circular paths called shells or orbits. Sub-shell: A sub-shell is the area in which electron moves within a shell. Orbital: The three dimensional space around the nucleus where the proba...

In 1913, Neil Bohr presented a new atomic theory to overcome the defects of Rutherford's atomic model. Bohr considered hydrogen atom as a model. #scienceonline24

Rutherford performed experiment to determine the internal structure of atom in 1911. From this experiment he concluded that most of the space in an atom is empty. Electrons are revolving around the nucleus at high speed and also discovered the nucleus. #atom #atomicmodel #chemistry

Democritus, the Greeks Philosopher suggested that all matters are composed of tiny particles which are indivisible called ' atomos ' a Greek word means indivisible. In 1808, an English school teacher John Dalton suggested some postulates about atomic structure. #chemistry #atomicstructure

Equilibrium constant, Kc predict the direction of chemical reactions as well as extent of chemical reactions. when the value of Kc is equal to 1 it means equilibrium is established. when value of Kc is smaller than 1, it means products are less and forward reaction will occur. when value of Kc is greater than 1, it means products are formed in large amount and reverse reaction will occur. #chem...

Equilibrium constant ( Kc ) has no units when the number of moles of products and number of moles of reactants are equal. Kc has units when the number of moles of products is greater or less than the number of moles of reactants. #chemicalequilibrium #Lawofmassaction #reversiblereaction

Chemical Equilibrium is established when the rate of forward reaction equals to the rate of reverse reaction. To recognize the equilibrium, two methods are used one is physical method and the other is chemical methods. #chemicalequilibrium #chemicalprocess #reversiblereaction

In this lecture we will study about the conditions for Equilibrium. Equilibrium establish in a close container. The concentrations of the reactants and products should be constant. similarly the pressure , volume and temperature of the system remains constant. The catalyst if used remains unchanged. #chemicalequilibrium #chemistry #reversiblereaction

Equilibrium constant , Kc | kc for general reaction| 10th class | Unit 09 |

Law of Mass Action | Derivation of general equation | Chemical equilibrium | 10th | Unit 09

Chemical equilibrium | Macroscopic characteristics of forward and reverse reaction | Lecture 4 |

Dynamic equilibrium | Graphical presentation | class 10th | Lecture 03 | Unit 09|

Chemical equilibrium | Irreversible reaction | Reversible reaction | 10th class | Chapter 09|

Chemical equilibrium || Introduction || 10th class || Lecture 01 || Chapter 09||

Mole - Particle calculations || Question|| Part 02 || Chapter 01|| Fundamentals of chemistry ||

Mole and particle calculations | Example | 9th class | chapter 01 | Fundamentals of chemistry

Mole and Mass calculations | Part 02 | 9th class | Chapter 01| Fundamentals of chemistry

Mole and Mass calculations | Example | class 9th | Chapter 01 | Fundamentals of chemistry

Gram Atomic Mass | Gram Molecular Mass | Gram Formula Mass | 9th class | Chapter 01

Mole | Avogadro's number | class 9th | chapter 01 | Fundamentals of chemistry

Free Radicals | Formation of Free Radicals | Class 9th | Chapter 01| Fundamentals of chemistry

Molecular Ions | Types of Molecular Ions | Formation of Molecular Ions | class 9th |

Difference between Atom and Ion | class 9th | chapter 01| Fundamentals of chemistry