Describes how the four separation techniques work through pictures and detailed explanation, so as to give a better idea of how different separation techniques work and develop interest.
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
Mixtures
Pure substance :
It is the substance that is made of only one type of identical particles.
Mixture :
It is the substance that consists of more than one type of particles.
Elements, compounds and experimental techniques ppt HashmatKhan21
A very well prepared ppt for o level students looking for information on this topic(Elements, compounds and experimental techniques ). With very small but very important information. I hope this is useful for u guys.
Rinse out the 250 mL flasks that you used to dilute the concentrated acid and base solutions. Weigh out 0.7 to 0.9 g of KHP (pictured below) into a 250 mL flask and dissolve it in 50 mL of distilled water. Add three drops of the phenolphthalein indicator in the flask (see below). Then place the flask under the base buret and start the titration
Mixtures
Pure substance :
It is the substance that is made of only one type of identical particles.
Mixture :
It is the substance that consists of more than one type of particles.
Elements, compounds and experimental techniques ppt HashmatKhan21
A very well prepared ppt for o level students looking for information on this topic(Elements, compounds and experimental techniques ). With very small but very important information. I hope this is useful for u guys.
Rinse out the 250 mL flasks that you used to dilute the concentrated acid and base solutions. Weigh out 0.7 to 0.9 g of KHP (pictured below) into a 250 mL flask and dissolve it in 50 mL of distilled water. Add three drops of the phenolphthalein indicator in the flask (see below). Then place the flask under the base buret and start the titration
RELATIVE RATES OF COMPETING REACTIONS
Chemical behavior is a matter of relative rates of competing reactions.
The competing reaction which occurs the fastest, predominates (makes more product than the other competing reactions).
The predominate reaction is usually the reaction which was the easiest mechanism
STRUCTURE: The Functional Group
The atom or group of atoms that defines the structure of a particular family of organic compounds and, at the same time, determines their properties is called the functional
Introduces the concept of covalent bonding with macro-molecules and simple covalent molecules.
Next, it covers inter-molecular attraction but explaining how temporary dipoles form
Finally, heating and cooling curves together with an explanation for how energy is absorbed or given out during boiling or freezing
provides an overview of the topic of motion in physics
teaches students about the idea of velocity and acceleration
Explains the idea of gradient and goes in-depth into interpretation of distance-time and velocity-time graphs
Provides exercises to test the understanding of students
trains students in the state symbols for reactants and products in a chemical equation.
Elements in their elemental form and compounds are divided into covalent and ionic compounds for classification and easier identification of relevant state symbols.
teachers answers for teaching ions and bonding,
spaces provided for students to copy down diagrams and drawings of ions' electronic configuration and covalent bonding between molecules
Business Valuation Principles for EntrepreneursBen Wann
This insightful presentation is designed to equip entrepreneurs with the essential knowledge and tools needed to accurately value their businesses. Understanding business valuation is crucial for making informed decisions, whether you're seeking investment, planning to sell, or simply want to gauge your company's worth.
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India Orthopedic Devices Market: Unlocking Growth Secrets, Trends and Develop...Kumar Satyam
According to TechSci Research report, “India Orthopedic Devices Market -Industry Size, Share, Trends, Competition Forecast & Opportunities, 2030”, the India Orthopedic Devices Market stood at USD 1,280.54 Million in 2024 and is anticipated to grow with a CAGR of 7.84% in the forecast period, 2026-2030F. The India Orthopedic Devices Market is being driven by several factors. The most prominent ones include an increase in the elderly population, who are more prone to orthopedic conditions such as osteoporosis and arthritis. Moreover, the rise in sports injuries and road accidents are also contributing to the demand for orthopedic devices. Advances in technology and the introduction of innovative implants and prosthetics have further propelled the market growth. Additionally, government initiatives aimed at improving healthcare infrastructure and the increasing prevalence of lifestyle diseases have led to an upward trend in orthopedic surgeries, thereby fueling the market demand for these devices.
Falcon stands out as a top-tier P2P Invoice Discounting platform in India, bridging esteemed blue-chip companies and eager investors. Our goal is to transform the investment landscape in India by establishing a comprehensive destination for borrowers and investors with diverse profiles and needs, all while minimizing risk. What sets Falcon apart is the elimination of intermediaries such as commercial banks and depository institutions, allowing investors to enjoy higher yields.
Discover the innovative and creative projects that highlight my journey throu...dylandmeas
Discover the innovative and creative projects that highlight my journey through Full Sail University. Below, you’ll find a collection of my work showcasing my skills and expertise in digital marketing, event planning, and media production.
Taurus Zodiac Sign_ Personality Traits and Sign Dates.pptxmy Pandit
Explore the world of the Taurus zodiac sign. Learn about their stability, determination, and appreciation for beauty. Discover how Taureans' grounded nature and hardworking mindset define their unique personality.
The world of search engine optimization (SEO) is buzzing with discussions after Google confirmed that around 2,500 leaked internal documents related to its Search feature are indeed authentic. The revelation has sparked significant concerns within the SEO community. The leaked documents were initially reported by SEO experts Rand Fishkin and Mike King, igniting widespread analysis and discourse. For More Info:- https://news.arihantwebtech.com/search-disrupted-googles-leaked-documents-rock-the-seo-world/
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RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...BBPMedia1
Marvin neemt je in deze presentatie mee in de voordelen van non-endemic advertising op retail media netwerken. Hij brengt ook de uitdagingen in beeld die de markt op dit moment heeft op het gebied van retail media voor niet-leveranciers.
Retail media wordt gezien als het nieuwe advertising-medium en ook mediabureaus richten massaal retail media-afdelingen op. Merken die niet in de betreffende winkel liggen staan ook nog niet in de rij om op de retail media netwerken te adverteren. Marvin belicht de uitdagingen die er zijn om echt aansluiting te vinden op die markt van non-endemic advertising.
RMD24 | Retail media: hoe zet je dit in als je geen AH of Unilever bent? Heid...BBPMedia1
Grote partijen zijn al een tijdje onderweg met retail media. Ondertussen worden in dit domein ook de kansen zichtbaar voor andere spelers in de markt. Maar met die kansen ontstaan ook vragen: Zelf retail media worden of erop adverteren? In welke fase van de funnel past het en hoe integreer je het in een mediaplan? Wat is nu precies het verschil met marketplaces en Programmatic ads? In dit half uur beslechten we de dilemma's en krijg je antwoorden op wanneer het voor jou tijd is om de volgende stap te zetten.
Memorandum Of Association Constitution of Company.pptseri bangash
www.seribangash.com
A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
https://seribangash.com/article-of-association-is-legal-doc-of-company/
Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
https://seribangash.com/promotors-is-person-conceived-formation-company/
Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
https://seribangash.com/difference-public-and-private-company-law/
Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
Personal Brand Statement:
As an Army veteran dedicated to lifelong learning, I bring a disciplined, strategic mindset to my pursuits. I am constantly expanding my knowledge to innovate and lead effectively. My journey is driven by a commitment to excellence, and to make a meaningful impact in the world.
1. Revision topics
1. Elements, compounds and mixtures
A mixture refers to two or more substances that can be separated by physical means
One important method is filtration
Filtration is used to separate insoluble solids from liquids because solid particles are too large
to pass through the filter.
Can you separate sand and water using filtration?
How about separating sugar and water using filtration?
Did you know that…
Sand can be used for filtration?
And that the teabag work by using a filter?
An insoluble substance cannot dissolve in water
What does dissolving mean?
2. Something that is soluble can be split up by a solvent into its smallest parts and distributed
throughout the solution.
Solvent is a substance that can dissolve other substances
When you see the word “solution of something”, it means that that substance is the solute and
is actually dissolved in the solvent! (usually the solvent is water)
Did you know that stirring a soluble substance helps it to dissolve faster?
To separate something that has dissolved in water, we have to use the method of
crystallisation.
Crystallisation works because the first step is to heat the solution to obtain a saturated
solution.
Notice that such a solution is holding the maximum amount of the substance it can dissolve.
3. When we leave the saturated solution to cool, crystals will form. This is because when the
temperature is lower, the maximum amount of solute a solvent can dissolve is lower.
Therefore, some of the solute would have to be crystallised out.
Next we will need to rinse the crystals with cold distilled water. (remember that warm water
can dissolve some of the crystals we purified)
Finally, the last step in purifying our crystals is to dry the crystals using filter paper.
If you dissolve sugar crystals in water, can you get back sugar crystals?
What if you have two different liquids mixed together?
Here we have 5 different liquids
4. Golden syrup is a type of sugar syrup while food colouring is used to give alcohol some
colour. When the syrup is mixed with the dishwashing liquid, look at what happens!
5. Next, look at what happens when the different liquids are added on top of each other carefully
without stirring
Tada!
To separate liquids, we can make use of distillation because liquidshave different boiling
points.
6. Student Kevin Nguyen (age 10):
Using the same amount of cooking oil and water, which liquid will boil first?
Why is one liquid boiled before the other?
Answer by someone from the University of Illinois Physics Department
The boiling point for oil is roughly 300 degree Celsius while that of water is 100 degree
Celsius.
The boiling point of a liquid is the temperature where the liquid changes into a gas.
The reason why different liquids boil at different temperatures is because of the chemical
bonds that hold them together.
So when we say that oil has a higher boiling point than water, what we are saying is that the
chemical bonds that hold oil molecules together are stronger than the ones holding water
molecules together. Hence, more heat is required to break the stronger bonds in oil.
The distillation process
During distillation, the mixture of liquids is heated and the liquid with the lowest boiling
point boil first.
The gas formed passes through the condenser and condenses back into a liquidand is collected
in a container.
7. If you are asked to draw the distillation set up, make sure you draw the 1) bunsen burner 2)
distilling flask 3) retort stand 4) thermometer 5) condenser 5) conical flask to collect
the distillate
We also use a similar type of distillation called fractional distillation to separate liquids
which have very close boiling points.
The fractional distillation process
During fractional distillation, the ABACADABRA (could be crude oil or liquefied air) is
heated and the liquid with the lowest boiling point boil first.
The gas formed rises up the fractionating column andas it rises up the column, it starts to cool
down.
8. When the gas rises up till a certain height such that it has lost enough heat and the
surrounding temperature is equal to the boiling point of the gas, it willcondenses back into a
liquidand is collected in a tray.
The substance with the lowest boiling point will condense at the highest point in the
fractionating column because it turns into a liquid at a very low temperature whereas it was
heated up to a very high temperature and has a lot of heat to lose.
Crude oil is basically a mixture of all the different members of the alkane hydrocarbon
family. We separate them because of their different properties. The first 4 members are gases
at room temperature and can be used in gas burners and lighters. The next few are liquid and
can be used as vehicle fuel as they provide more energy than the gaseous members.
9. An element refers to a substance that cannot be broken down by chemical means
More resources
The exciting liquids experiment
http://orbitingfrog.com/post/3424287163/exploring-liquids-an-experiment
Filtration:
http://www4.agr.gc.ca/AAFCAAC/displayafficher.do?id=1189706528512&lang=eng