Students Ready ho jao kl Evening me 6 pm ke liye 🔥 🔥 🔥
Please open Telegram to view this post
VIEW IN TELEGRAM
❤11🤩1
Students ! Guess Who are these two new guests??
Session link :- https://youtube.com/live/AD-G1rf5cGI
Session link :- https://youtube.com/live/AD-G1rf5cGI
❤6
✅ Atomic and Molecular Masses
➖Atomic Mass:
Mass of an atom.
Reported in atomic mass unit “amu” or unified mass “u”
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
➖Molecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
✅ Mole Concept:
➖Mole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
➖Molar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
➖Atomic Mass:
Mass of an atom.
Reported in atomic mass unit “amu” or unified mass “u”
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
➖Molecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
✅ Mole Concept:
➖Mole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
➖Molar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
👍9
Please open Telegram to view this post
VIEW IN TELEGRAM
💯21❤2👍2🏆2🤗2
Most effective light for stomatal opening is
Anonymous Quiz
35%
a.Red
21%
b.Blue
30%
c.Green
15%
d.Yellow
🤗6👍2💯2❤1😱1
Transpiration is a phenomenon pertaining to
Anonymous Quiz
31%
a.Activated transport
33%
b.Diffusion
28%
c.Osmosis
7%
d. Facilitated diffusion
🤯11👍4❤1
___________is an organelle that helps the sperm to penetrate the ovum.
Anonymous Quiz
51%
Acrosome
36%
Zona pellucida
10%
Megalis
4%
None of the above
👍4❤3🥰1😱1
How does human sperm locomote?
Anonymous Quiz
49%
Flagella
21%
Cilia
19%
Neutrophils
11%
None of the above
❤🔥9
Attention Everyone! 📢
ScienceAdda247 proudly presents its top product tailored for your Boards PREPARATION. Dive into the ultimate solution to ace your challenges🍸
It's time to immerse yourself deeply into your NCERT.
Why wait? Take action now!😀
🔴 BOARDS SANKALP 2.0
🔴 संकल्प है Boards में TOP करने का 💪
✔️ Use Code: TOPPER
✔️ Use Code: TOPPER
Grab an exclusive 20% discount with the code: TOPPER💰 .
Seize this golden opportunity and elevate your preparation!⭐️
ScienceAdda247 proudly presents its top product tailored for your Boards PREPARATION. Dive into the ultimate solution to ace your challenges
It's time to immerse yourself deeply into your NCERT.
Why wait? Take action now!
Grab an exclusive 20% discount with the code: TOPPER
Seize this golden opportunity and elevate your preparation!
Please open Telegram to view this post
VIEW IN TELEGRAM
👍9🤩2🏆2🤔1
Galápagos finches are a good example of ____________.
Anonymous Quiz
17%
Extinction
25%
Heterochromia
17%
Island gigantism
41%
Adaptive radiation
🤩4🤗2🥰1
Which of the following animals is now extinct?
Anonymous Quiz
18%
Tasmanian devil
45%
Tasmanian tiger
21%
Pademelon
16%
Quoll
👍5🤩2
🔷Matter In Our Surroundings🔷
Everything found in this universe is made up of some materials, scientists have named them as “matter.” For example, the food we eat, the air we breathe, stones, clouds, stars, plants, animals, water, dust, everything is categorized as matter.
♦️Characteristics of Particles of Matter
➖Particles of matter are very small, normally, not visible from naked eye.
➖Particles of matter keep moving continuously, which is known as the “kinetic energy.”
➖Kinetic energy of particles directly depends on the temperature, as temperature increases, the speed of the movement also increases.
➖The particles of matter have attracting force; therefore, they attract each other.
➖The attracting force of the particles keeps the particles together; however, the strength of the attracting force varies from one kind of matter to another.
States of Matter
Matter has three following states −
➖Solid State
➖Liquid State
➖Gaseous State
🧿Solid State
➖All the solid materials have a definite shape, distinct boundaries, and fixed volumes.
➖Most of the solid materials have negligible compressibility.
➖All the solid materials have a natural tendency to maintain their shape when subjected to outside force.
➖The solid materials can be broken under applied force, but it is very difficult to change their shape, as they are rigid.
🧿Liquid State
➖Unlike solids, liquids have no fixed shape; however, they have a fixed volume
➖Liquids take up the shape of the container in which they are kept.
➖Liquids have the property to flow and change shape.
🧿Gaseous State
➖Matter in the form of air, which is neither solid nor liquid, is known as gas. For example, oxygen, nitrogen, hydrogen, etc.
➖Unlike solid, gas has not definite size and shape.
➖The gases, such as liquefied petroleum gas (LPG – used in cooking); compressed natural gas (CNG – used as fuel in vehicles), etc. have high compressibility; therefore, large volume of a gas can be compressed into a small cylinder and can be transported easily.
➖Gases, normally, show the property of diffusing very fast into other gases. This is the reason that we can smell (either good or bad) from the distance.
🔷Matter Can Change its State
➖Water can exist in all three states, e.g. Ice as solid; water (H2O) as liquid; and water vapor as gas.
➖The temperature, at which solid melt and transform into the liquid (at the given atmospheric pressure), is known as “melting point.”
➖The melting point of a solid is an indication of the strength of the force of attraction between its particles.
➖The melting point of ice is 273.16 K, i.e. 00 C.
➖The process of melting (i.e. change of solid state into liquid state) is known as fusion.
➖The amount of heat energy, which is required to change 1 kg of a solid materials into liquid materials at a given atmospheric pressure, is known as the latent heat of fusion.
➖The temperature at which a liquid starts boiling at the given atmospheric pressure is known as “boiling point.”
➖The boiling point of water is 373 K i.e. 1000C.
➖A change of state of a matter directly from solid to gas without changing into liquid state (or vice versa) is known as “sublimation.”
➖The phenomenon i.e. change of a liquid into vapors at any temperature below its boiling point is known as “evaporation.”
➖Solid carbon dioxide (CO2) is stored under high pressure.
➖Solid CO2 gets converted directly into gaseous state once the pressure decreases to 1 atmosphere.
➖Atmosphere (atm) is a unit of measuring pressure exerted by the gas and the unit of pressure is Pascal (Pa); 1 atmosphere = 1.01 × 105 Pa.
🔷The Fourth State of Matter
➖Plasma is the state that consists of super energetic and super excited particles.
➖The super excited particles are found in the form of ionized gases. E.g. the fluorescent tube (which contains helium gas) and neon sign bulbs (which contain neon gas) consist of plasma.
Everything found in this universe is made up of some materials, scientists have named them as “matter.” For example, the food we eat, the air we breathe, stones, clouds, stars, plants, animals, water, dust, everything is categorized as matter.
♦️Characteristics of Particles of Matter
➖Particles of matter are very small, normally, not visible from naked eye.
➖Particles of matter keep moving continuously, which is known as the “kinetic energy.”
➖Kinetic energy of particles directly depends on the temperature, as temperature increases, the speed of the movement also increases.
➖The particles of matter have attracting force; therefore, they attract each other.
➖The attracting force of the particles keeps the particles together; however, the strength of the attracting force varies from one kind of matter to another.
States of Matter
Matter has three following states −
➖Solid State
➖Liquid State
➖Gaseous State
🧿Solid State
➖All the solid materials have a definite shape, distinct boundaries, and fixed volumes.
➖Most of the solid materials have negligible compressibility.
➖All the solid materials have a natural tendency to maintain their shape when subjected to outside force.
➖The solid materials can be broken under applied force, but it is very difficult to change their shape, as they are rigid.
🧿Liquid State
➖Unlike solids, liquids have no fixed shape; however, they have a fixed volume
➖Liquids take up the shape of the container in which they are kept.
➖Liquids have the property to flow and change shape.
🧿Gaseous State
➖Matter in the form of air, which is neither solid nor liquid, is known as gas. For example, oxygen, nitrogen, hydrogen, etc.
➖Unlike solid, gas has not definite size and shape.
➖The gases, such as liquefied petroleum gas (LPG – used in cooking); compressed natural gas (CNG – used as fuel in vehicles), etc. have high compressibility; therefore, large volume of a gas can be compressed into a small cylinder and can be transported easily.
➖Gases, normally, show the property of diffusing very fast into other gases. This is the reason that we can smell (either good or bad) from the distance.
🔷Matter Can Change its State
➖Water can exist in all three states, e.g. Ice as solid; water (H2O) as liquid; and water vapor as gas.
➖The temperature, at which solid melt and transform into the liquid (at the given atmospheric pressure), is known as “melting point.”
➖The melting point of a solid is an indication of the strength of the force of attraction between its particles.
➖The melting point of ice is 273.16 K, i.e. 00 C.
➖The process of melting (i.e. change of solid state into liquid state) is known as fusion.
➖The amount of heat energy, which is required to change 1 kg of a solid materials into liquid materials at a given atmospheric pressure, is known as the latent heat of fusion.
➖The temperature at which a liquid starts boiling at the given atmospheric pressure is known as “boiling point.”
➖The boiling point of water is 373 K i.e. 1000C.
➖A change of state of a matter directly from solid to gas without changing into liquid state (or vice versa) is known as “sublimation.”
➖The phenomenon i.e. change of a liquid into vapors at any temperature below its boiling point is known as “evaporation.”
➖Solid carbon dioxide (CO2) is stored under high pressure.
➖Solid CO2 gets converted directly into gaseous state once the pressure decreases to 1 atmosphere.
➖Atmosphere (atm) is a unit of measuring pressure exerted by the gas and the unit of pressure is Pascal (Pa); 1 atmosphere = 1.01 × 105 Pa.
🔷The Fourth State of Matter
➖Plasma is the state that consists of super energetic and super excited particles.
➖The super excited particles are found in the form of ionized gases. E.g. the fluorescent tube (which contains helium gas) and neon sign bulbs (which contain neon gas) consist of plasma.
👍10
ttention Everyone! 📢
ScienceAdda247 proudly presents its top product tailored for your Boards PREPARATION. Dive into the ultimate solution to ace your challenges🍸
It's time to immerse yourself deeply into your NCERT.
Why wait? Take action now!😀
🔴 BOARDS SANKALP 2.0
🔴 संकल्प है Boards में TOP करने का 💪
✔️ Use Code: TOPPER
✔️ Use Code: TOPPER
Grab an exclusive 20% discount with the code: TOPPER💰 .
Seize this golden opportunity and elevate your preparation!⭐️
ScienceAdda247 proudly presents its top product tailored for your Boards PREPARATION. Dive into the ultimate solution to ace your challenges
It's time to immerse yourself deeply into your NCERT.
Why wait? Take action now!
Grab an exclusive 20% discount with the code: TOPPER
Seize this golden opportunity and elevate your preparation!
Please open Telegram to view this post
VIEW IN TELEGRAM
👍7❤1
Class 12 Boards Chemistry :- https://dl.adda247.com/rBzJ
Class 12 Boards Physics :- https://dl.adda247.com/59fE
Class 12 Boards Maths :- https://dl.adda247.com/FzKn
Please open Telegram to view this post
VIEW IN TELEGRAM
Google Play
Adda247-Exam Prep to Selection - Apps on Google Play
Prepare for UPSC, SSC, IBPS, CUET, NEET, JEE, SBI, RRB NTPC, CTET, IAS, PSC Exam
👍5🤩4🥰1
Are You Ready For Today 5:00 PM 💪
Session Link :- https://youtube.com/live/W6-V1YmLrKQ
❌❌
Please open Telegram to view this post
VIEW IN TELEGRAM
YouTube
Good News For Class 12 Boards 2024 | Latest Update Cbse Boards 2024 🤩🤩
👉🏽Sankalp 2.0 💪 :- https://dl.adda247.com/FzKn
👉🏽 संकल्प है Boards में TOP करने का 💪 : https://dl.adda247.com/c3rC
✅For Admission: 08035358482
👉🏽 One Stop Solution for CUET 2024: https://www.adda247.com/cuet-maha-pac...
👉🏽 Connect with Your Mentors…
👉🏽 संकल्प है Boards में TOP करने का 💪 : https://dl.adda247.com/c3rC
✅For Admission: 08035358482
👉🏽 One Stop Solution for CUET 2024: https://www.adda247.com/cuet-maha-pac...
👉🏽 Connect with Your Mentors…
🔥8🥰5❤3👍3