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Question asked by Filo student
- Dogs generally hang out their tongue in summer
- Smell of lighted incense stick spreads several meters away
- Sponge though compressible is a solid
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Updated on: Jun 6, 2022
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(Atoms and Molecules)वं ग्रीक दार्शिनिक द्रव्य के अज्ञात तथा क्यों संयोग करते हैं? जब तत्व परसपर सक्र सदैव चकित होते रहे। पदार्थ की करते हैं, तब क्या होता है?के बारे में भारत में बहुत पहले, वैज्ञानिक आंतवाँ एल. लवाइजिए (AntonleL,पूर्व विचार व्यक्त किया गया था। Lavoisier) ने रासायनिक संयोजन के दो महलतांनक महर्षि कनाड (Maharshi नियमों को स्थापित किया जिसने रसायन विश्रान का Iित किया था कि यदि हम द्रव्य महत्वपूर्ण आधार प्रदान किया।जित करते जाएँ तो हमें छोटे-छोटेएँगे तथा अंत में एक सीमा आएगी 3.1 रासायनिक संयोजन के नियम
the last chapter, we recull that all living There are noticeable differer the last chapter, werectilt inatailining the two. Plants are stafionary of isms, a single cell performs all basic don't move. Since they have to be ons. Por example, in Amoeba. a single have a large quantity of supporth arries out movement. Intake of food. supportive lissue generally has 18 exchange and excretion. But in mult- Antmals on the other hand r Ir onanisms there are millions of cells: in scarch of food. mates and s. functions. Each spectalised funetter consume more energy as compar nup by a different group of cells, Since Most of the tissues they contain ells carny out only a particular function. Another difference between it very efliciently. In human beings. plants is in the pattern of growth cells contract and relax to cause in plants is limited to certain regio cht, nerve cells carry messages, blood is not so in animals. There are sor transpor avgen, food, hormones and plants that divide throughout the conduct food ond. In plants, vascular tissucs are localised in certain re; conduct food and water from one part on the dividing capacity of the tiss ms show division of labour. Cells meristematic tissue and permaner ing in one function are often grouped growth in animals is more unifor in the body. This means that a growth in animals is more unifor if function is carried out by a cluster is no such demarcation of dividi t a definite place in the body. This dividing regions in animals. cells, called a tissue, is arranged and The structural organisation of so as to give the highest possible organ systems is far more spec of function. Blood, phloem and localised in complex animals than e all examples of tissues. complex plants. This fundamenta pof cells that are similar in structure reflects the different modes of life rims together to achieve a particular these major groups of particularly in their different feed Plants and Animals Also, they are differently ada Plants and Animals Made sedentary existence on one hand ame Types of Tissues? active locomotion on the other are their structure and functions. design. and animals have the same It is with reference to these com Do they both perform similar and plant bodies that we will now the concept of tissues in some det
mV3.9 WRITING CHEMICAL FORMULA OF AN IONIC COMPOUNDThe ionic compounds such as NaCl, KCL KNO, etc, do not contain discrete molecules as the constiparticles but their constituent particles are cations and anions. For example, in sodium chloride, the constTo write the chemical formula of an ionic compound, proceed as follows:ions are Na" and C lonsStep 1. First write the symbol (or chemical formula) of the cation showing the charge on it. Then, write tStep 2. If the compound contains polyatomic ions, e.g. phosphate ion, then enclose the chemical formStep 3. Now, criss-cross the charge number (i.e, valency) of the ions. Thus, cation is subscripted with thecharge number of the anion and the anion is subscripted with the charge number of the cationsymbol (or chemical formula) of the anion showing charge on it, to the right of the cation.of ion within small brackets and show the charge on it.Step 4. If any subscript is 1, it is not written in the final formula.If required, divide the subscripts by a common factor.The following examples will illustrate the method more clearly:1. Sodium nitrateIt contains Na and NO; ions.Step 1. Write the symbols of cation and anion side-by-side with charges, i.e.,Na¹ NOStep 2. The anion, NO; is polyatomic ion, hence enclose it within small brackets, i.e..Na¹ (NO₂)¹-Step 3. Criss-cross the charges (valencies), i.e.NaXNONa NO₂As the total positive charge on cations and the total negative charge on anions are equal in an ionecompound, the formula is shown like a molecular compound. Thus, the formula of sodium nitrate is as followsNa NO₁ or NaNO32. Aluminium sulphateThe ions present in this compound are Al³+ and SO2, i.e.,Al³+ SoA1³-X(SO₂)²-Al₂(SO4)33. Barium carbonateThis compound has Ba2+ and CO ions, i.e.,Ba²+ CoBa²+X(CO₂)²-4. Ammonium sulphateThis compound has NHA and SO2 ions, i.e.,NHÀ SO(NH4)²*X(SO₂)²-5. Barium phosphate106 A SIMPLE STUDY OF CHEMISTRY-9Ba₂(CO3)2 or BaCO3(NH4)2SO4This compound has Ba2+ and PO ions, i.e.,Ba²+ X(PO4)³Ba²+ POBa3(PO4)2SAMPLE PROBLEM 3.5: Write the formulae of the following compounds:(a) Ammonium carbonate (b) Lead sulphate (c) Calcium fluoride.SOLUTION:Compounda) Ammonium carbonate(b) Lead sulphate(c) Calcium fluorideSAMPLE PROBLEM 3.6formulae of these twoSOLUTION: When valeSymbolsValenciesCriss-crossing the valFormulaSimilarly, when valeSymbolValenciCriss-crossing theFormuSAMPLE PROBLEM(i) state the va(ii) write the foSOLUTION:(1) The givenM²(ii)M₂(SODifferencesMoleculaexampleIonic ca(NormalA moleAn ionThe m+ Ioniccomp3.10 FIonic compare oppos
2. Sodium bicarbonate is formed on passing soda) carbonate. (sodium bicarbonate = baking Chemical equation of the reactiona. Write down the equation of the chemical carbon dioxide in the above experiment.Write down the equation of the chemical reaction taking place on putting limewc in the gas jar of CO2.ises of carbon dioxideCO2 is used to make aerated drinksSolid carbon dioxide is used in cold storage and also to keep milk and milk p
Chemistry 1. Make a pictionary of 50 new words related to chemistry from the chapters of NCERT and also paste pictures related to the topic. 2. Draw a 3D chart of A3 size on any one of the topic - Fractional distillation, chromatography, sublimation, evaporation, inter conversion of states of matter. 3. Do the practice manual questions of 3 marks and 5 marks of Chapter- 1 (Matter in our surroundings) and sample periodic paper 1 in chemistry notebook. 4. Do the assignment of L−1 attached in chemistry notebook. Chemistry Assignment Q1 Account for the following
|Updated On||Jun 6, 2022|
|Answer Type||Video solution: 1|
|Avg. Video Duration||12 min|
- Bunk bed.
Chemistry is the study of matter, analysing its structure, properties and behaviour to see what happens when they change in chemical reactions. As such, it can be considered a branch of physical science, alongside astronomy, physics and earth sciences including geology.What are the hardest words in chemistry? ›
Most difficult terms in chemistry are fromPhysical chemistry. Among them 9 words have difficult prefix and the rest 3 have difficult suffix. Anti ferromagnetic, diazo, thermodynamics, syn elimination are the most difficult words.What is 10 chemistry? ›
In a more formal sense, chemistry is traditionally divided into five major subdisciplines: organic chemistry, biochemistry, inorganic chemistry, analytical chemistry, and physical chemistry.What is Pictionary in science? ›
Bio-Pictionary—a scientific party game which helps to develop pictorial communication skills.Can you write words in Pictionary? ›
The drawer chooses a card out of a deck of special Pictionary cards and tries to draw pictures which suggest the word printed on the card. The pictures cannot contain any numbers or letters, nor can the drawers use spoken clues about the subjects they are drawing.What are the 5 Pictionary categories? ›
- Yellow - OBJECT (Things that can be touched or seen)
- Blue - PERSON/PLACE/ANIMAL (Names are included)
- Orange - ACTION (Things that can be performed)
- Green - DIFFICULT (Challenging words)
- Red - MISCELLANEOUS (This can be any type of word)
Chemistry: "The branch of science that deals with the study of the composition and the physical and chemical properties of various forms of matter is called Chemistry."
Right from chewing to digestion, many chemical reactions take place. Once the food goes down to the stomach, it gets mixed with HCL (Hydrochloric Acid) which is released by the walls of the stomach. This makes it one of the most common examples of chemistry in everyday life!What is chemistry in simple words for kids? ›
Chemistry is the study of the make-up of all things and how they behave. It's based on the study of matter, which is what makes up everything in the universe and on Earth.What is the longest Chem word? ›
1. methionylthreonylthreonylglutaminylalanyl… isoleucine. You'll notice there's an ellipsis here, and that's because this word, in total, is 189,819 letters long, and it's the chemical name for the largest known protein, titin.What is the fastest chemistry? ›
Within a fraction of a trillionth of a second, H2O+ gives up a proton to another water molecule, creating hydronium (H3O+) and a hydroxyl (OH) radical. Scientists had long known of this reaction, with a first sighting in the 1960s when scientists at Argonne first detected the electron ejected from water by radiolysis.What are some good chemistry questions? ›
Why are there so many different kinds of forces in chemistry? Why do atoms always contain the same number of electrons and protons? Why doesn't the planet Uranus explode if it contains so much hydrogen and methane? Why don't metals burn?What is 4 chemistry? ›
|1||mono- or hen-*||hecta-|
This course enables students to develop an understanding of chemistry through the study of matter and qualitative analysis, organic chemistry, electrochemistry, chemical calculations, and chemistry as it relates to the quality of the environment.What is the name of 20 in chemistry? ›
|Atomic number||Name chemical element||Symbol|
Chemistry is the study of how substances and materials interact with one another. We will be starting this unit by identifying what matter is and what states it is formed in. Then we will look at the many properties of matter! This is our cool foldable we will be making!What are the 7 important chemical groups? ›
Properties of Functional Groups
Some of the important functional groups in biological molecules include: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl groups. These groups play an important role in the formation of molecules like DNA, proteins, carbohydrates, and lipids.
Organic Chemistry is the most logical section of Chemistry, which makes it easy.Can you draw in Pictionary? ›
Once the card is drawn, the Drawer has 5 seconds before they must begin to sketch. Once 5 seconds are up, the time is set to 1 minute and the drawer sketches their words. Note: A sketch can not include letters or numbers.
- Choose your teammates carefully. ...
- Don't rush. ...
- Don't just assume everyone knows what you are thinking. ...
- Learn to separate words. ...
- Don't approach Pictionary as an art competition. ...
- Don't make your drawings too small. ...
- Don't draw the exact thing over and over.
Pictionary is a great game to teach new words to kids in a fun way. Kids are given a word that they are supposed to draw and make their team members guess. This game helps them associate the pictures with the word visually. This helps retain words for long and easily grasp any difficult word.What does D mean in Pictionary? ›
The rules are pretty much the same as the board game. Pictionary word cards will have letters on them denoting the type of word they will be drawing. For instance, a “D” means the word is difficult or challenging, an “A” means it's an action word, and so on.How do you make Pictionary easy? ›
- Divide into at least 2 teams of 2 or more. ...
- Set the scoring goal. ...
- Get your drawing supplies and timer in place. ...
- Pick a team to go first. ...
- Choose the first person to draw. ...
- Set the timer to 30 seconds. ...
- Start the round. ...
- Follow the rules.
Some of the things in Pictionary haven't changed: Yellow is Objects, Blue is Person/Place/Animal, Orange is Action, Green is Difficult.What ages is Pictionary for? ›
- Pictionary™ is the classic quick-draw game that's been a family favorite since 1985.
- Being an artist isn't required; in fact, if players 'can't draw,' the game can be even funnier.
- A great game for the whole family, ages 8 years and older.
Pictionary (2022 game show) - The current version hosted by Jerry O'Connell, has its own rules different from both of its predecessors.Why do I like chemistry? ›
It's a field where you have to constantly think creatively about how to overcome problems. Overcoming problems and having to create new ways to achieve this also builds your resilience and patience. It makes you develop your critical thinking skills and improves how you act in certain situations.
Chemistry is a relationship effect.
Chemistry can be related to liking, but it's broader than that: It encompasses the feeling that a given relationship is special and different from other relationships.
Chemistry is a challenging subject for most people, but it doesn't have to be. The number one reason people struggle with chemistry is that they don't approach it the right way. Below we'll explore proven strategies and techniques that will, if applied, improve your ability to study and learn chemistry.What is chemistry in 2 sentences? ›
Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.What is 5 examples of chemistry in everyday life? ›
We have been using Chemistry in everyday life since time immemorial. Applying lotions, cooking food, washing clothes, and cleaning the house – chemistry has been at work in almost everything.What is chemistry in Grade 7? ›
Students will have hands-on opportunities to separate components of mixtures using chromatography, will experiment with pH levels of acids and bases, and learn to group physical and chemical properties.What is chemistry in Grade 8? ›
Chemistry is the science of matter and its interactions. Everything around you is made of atoms – atoms and their chemical combinations, molecules. Everything you can see, touch, smell, and taste is made up of chemicals. So, the science of chemistry is a very wide ranging science.Why is it called chemistry? ›
The term chemistry is said to derive from the Greek word “khemeia”, which means "cast together." It is the atomic-level science of matter. Chemistry is the study of matter, including what it is made of, its characteristics, and how it changes.What is the hardest chem? ›
- Physical Chemistry is the hardest branch of chemistry.
- It involves the study of physical properties and constitution of matter, the laws of chemical combination, and theories governing chemical reactions.
The word chemistry derives from the word alchemy, which is found in various forms in European languages. Alchemy derives from the Arabic word kimiya (كيمياء) or al-kīmiyāʾ (الكيمياء).What is the shortest named chemical? ›
Tin (Sn) is the chemical element which has the shortest name. It is a metallic element with the chemical symbol Sn which comes from the latin word stannum. This element has many industrial uses including being used to can foods, and you can find it in the mechanical components of automobiles.
You'll need a lot more discipline to learn chemistry in a day compared with a week or a month. Also, keep in mind you won't have great retention if you cram chemistry in a day or a week. Ideally, you want a month or longer to master any course.Which chemical is king of chemistry? ›
Hence, Sulphuric acid ( H 2 SO 4 ) is known as king of chemicals.What is the strongest type of chemical? ›
In chemistry, a covalent bond is the strongest bond, In such bonding, each of two atoms shares electrons that bind them together. For example - water molecules are bonded together where both hydrogen atoms and oxygen atoms share electrons to form a covalent bond.What are 3 facts about chemistry? ›
- You can die from drinking too much water. ...
- Radioactive and nuclear elements actually glow in the dark. ...
- Glass is not a solid – glass is a liquid. ...
- Helium is lighter than air. ...
- To conclude our fun chemistry facts.
Marie Curie is one of the most famous names in science. This is arguably in part due to the charity set up in her name, but her achievements in chemistry also merit recognition.What are some easy chemistry facts? ›
One bucket full of water contains more atoms than there are buckets of water in the Atlantic ocean. Helium balloons float because helium is lighter than air. Bee stings are acidic, while wasp stings are alkaline. Hot peppers get their heat from a molecule called capsaicin.What is the 5 importance of chemistry? ›
Chemistry is essential for meeting our basic needs of food, clothing, shelter, health, energy, and clean air, water, and soil.What 5 words represent chemical change? ›
According to the algorithm that drives this word similarity engine, the top 5 related words for "chemical change" are: water, chemistry, transamination, chemical reaction, and cracking.What is chemistry 5 points? ›
What is chemistry? Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.How is chemistry used in food? ›
All food is made up of chemical substances. Chemicals in food are largely harmless and often desirable – for example, nutrients such as carbohydrates , protein , fat and fibre are composed of chemical compounds. Many of these occur naturally and contribute both to a rounded diet and to our eating experience.
Chemistry is a big part of our everyday life. One can easily observe this branch of science in different spheres of human life such as in the food we eat, the air we breathe, the various cleansing agents we use, so much so that even human emotions are sometimes a result of chemical reactions within our body!What is the 45 words in science? ›
The longest word entered in most standard English dictionaries is Pneumonoultramicroscopicsilicovolcanoconiosis with 45 letters. Our definition is "a lung disease caused by inhalation of very fine silicate or quartz dust." The entry for this word can be found in our Medical Dictionary.What are the 26 scientific terms? ›
Possible answers include: A - astronomy, B - biology, C - chemistry, D - diffusion, E - experiment, F - fossil, G - geology, H - heat, I - interference, J - jet stream, K - kinetic, L - latitude, M - motion, N - neutron, O - oxygen, P - physics, Q - quasar, R - respiration, S - solar system, T - thermometer, U - ...What is a 45 letter science word? ›
1. Pneumonoultramicroscopicsilicovolcanoconiosis (45 letters)What are 6 uses of chemistry? ›
Chemistry plays an important and useful role towards the development and growth of a number of industries. This includes industries like glass, cement, paper, textile, leather, dye etc. We also see huge applications of chemistry in industries like paints, pigments, petroleum, sugar, plastics, Pharmaceuticals.What are the 5 most important chemicals elements of life? ›
The six most common elements of life on Earth (including more than 97% of the mass of a human body) are carbon, hydrogen, nitrogen, oxygen, sulphur and phosphorus.What are 50 examples of chemical changes? ›
- Rusting of iron.
- Burning of fuel.
- Boiling of egg.
- Digestion of food.
- souring of milk.
- Baking of cake.
- colour change of leaves.
- Rotting of food materials.