Category «Physical Chemistry Notes»

Viscosity

Viscometer

Viscosity Do you know! “What is viscosity“. To understand about viscosity, we take example of some liquids like Honey and Water. As we know honey is thicker than water. So honey flow with very slow speed on floor than water, as water is very less thick so it flows quickly. Hence we can say that …

Solid State Chemistry MCQ Part 23

Solid State Chemistry MCQs These are 20 selected MCQs from Solid State Chemistry which are very important and asked in various exams like AMU, KCET, MP CET, CBSE, Karnataka CEE, MP PMT, Kerala MEE, MP PET, AIIMS, BHU, IIT, EAMCET, NCERT, CPMT, AIEEE, CETMP, Pb PMT, AFMC. MCQ-1.  In Solids, the constituent particles may be …

Class 11 Chapter 6 – Thermodynamics

Class 11 Chapter 6: Thermodynamics System:             A system is that part of universe in which we made observations is called system. Surroundings:             All remaining part of the universe, other than system is called surroundings. Universe = System + Surroundings Types of System:             The system is classified on the basis of movement of …

Some Basic Concepts of Chemistry Class 11 MCQ

Some Basic Concepts of Chemistry Class 11 MCQ These are some of the random multiple question answers from Some Basic Concept of Chemistry… 1. If a matter has definite volume and definite shape, then it is : SolidLiquidGasAll of the Above Show Answer 2. Mole is SI unit of : CurrentTemperatureAmount of Substance Luminous intensity …

Humidity

What is Humidity? The simple meaning of humidity is ‘atmospheric moisture’ or ‘amount of water vapor in the atmosphere’.  Humidity is the amount of water vapors present in the atmosphere (or air). Water vapors are the gaseous state of water and are invisible.  Humidity can be measured by three ways that are: absolute, relative and …

What is Normality ?

What is Normality ?  Normality is the ratio of gram equivalent weight to volume of solution in liter.  where gram equivalent is the measure of reactive capacity of molecule consider for normality. Normality (N) :-                                  Gram equivalent weight  / Volume …

What is Molality ?

What is Molality?  It is the ratio of moles of substance to kilogram of solvent.Where mole is weight in gram divided by molecular weight.Molality is chemistry terminology. Molality (m) :-                                  No. of moles of the solute  / Mass of solvent in Kilogram (Kg).     Unit =>   m = Moles/Kg What is Molality YouTube Video on Molality and …

Chemistry

What is Chemistry? It is the branch of science which deals with the study of composition, properties and interaction of matter. Definition of Chemistry Chemistry is the scientific study of matter and substances for how they combine, separate, react or interact with each other. Types of Chemistry Chemistry is generally (as per basic chemistry) classified …

Physical Chemistry

Physical Chemistry What is Physical Chemistry ? Definition of Physical Chemistry– Physical chemistry is the branch of chemistry. Physical Chemistry utilizes applications of physics to chemical systems to understand their physical properties. Physical chemistry is the study of atomic, subatomic, macroscopic, microscopic or particulate phenomena in chemical systems in terms of different laws and concepts …

10 Class- Periodic Classification of Elements

Periodic Classification of Elements In year of 1800 about 30 elements were known but at present we know about 114 elements. All these elements have different properties. So to study about these elements easily, scientists start searching some patterns in the properties to arrange these elements. Early Attempts in the Classification of Elements                                                                    This …

10 Class- Metals and Non-Metals

Metals and Non-Metals Metals             Metals are the solid materials which are typically hard, malleable, ductile and conduct heat and electricity, and also posses metallic lusture. Example- Iron, Gold, Aluminium, Silver, Copper etc. Non-metals                     Nonmetals are chemical elements which lacks metallic properties. Non metals are either solids or gases except Bromine (Br2), which occurs …

10 Class- Acids, Bases and Salts

Acids Bases and Salts ·       Natural indicator of acids and bases – Litmus, Turmeric ·       Synthetic indicator of acids and bases – Methyl Orange, Phenolphthalein ·       Olfactory indicators of acids and bases – Odor of these substance changes in acids and bases. pH scale for Acid Neutral and Alkaline (or Base) & Acid Base strength …

what is chemistry

What Is Chemistry Definition of Chemistry ? It is the branch of science which deals with the study of composition, properties and interaction of matter.Now you may have question or queries related to matter like….. What Is Matter ? Anything which has mass and occupies space known as matter. Ex:- Water, pencil, pen, book etc. Physical …

10th Class- Metals and Non-Metals Part- 3

10th Class Chapter- Metals and Non-Metals Occurrence of Metals                                               Maximum metals occur in earth’s crust and some metal occur in sea water. Metals and its compounds exist as minerals and if the percentages of metals in minerals are large then they are known as ores. 1.    Extraction of Metals Reactivity series is very helpful …

10th Class- Metals and Non-Metals Part- 2

10th Class Chapter- Metals and Non-Metals Reactivity Series of Metals                                               Reactivity series is the series in which metals are arranged as per order of decreasing activity. This reactivity series is developed after performing so many displacement experiments. This series is also called as activity series. K Pottasium More Reactive Reactivity Decreaseswhen we moveTop …

10th Class- Carbon and its Compounds Xth Class Chemistry Notes Part-1

Class 10th Chapter – Carbon and Its Compounds ·             Instead of gaining and loosing electrons, carbon shares its 4-electrons with another element or carbon to form molecule. ·             Covalent bonds are formed as a result of sharing of electrons. Example- H2, O2, N2. Covalent compounds have low melting point and boiling point due to small …

What is pH ?

                  Define pH What is pH? pH is a scale used in chemistry to represent acidic, basic or neutral nature of solutions etc. Definition of pH pH is negative logarithm of hydrogen ion concentration. pH = -log10[H+] pH scale is from 0 to 141. Acids have pH below 7.2. Bases have pH above 7.3. Neutral …

Top 10 Chemistry Websites

List of Top 10 Chemistry Websites Given below is the list of top ten chemistry websites. These top 10 chemistry websites are the best websites to learn chemistry as these chemistry sites provide all chemistry conten in literature and also explain topics via images, videos and 2D – 3D diagrams, charts and many more innovative …

10 Class- Chemical Reactions and Equations

Chemical Reactions and Equations ·       Every chemical change is a chemical reaction. ·       General observation to identify whether a chemical reaction take place or not- 1.    Change in state. 2.    Change in color. 3.    Evolution of gas. 4.    Change in temperature. Chemical Equations: Any equation which describes the change of reactants to products is called …