This document discusses different methods for separating mixtures:
- Magnetism can separate mixtures where one component is magnetic like iron.
- Hand separation involves manually separating large visible particles like separating ingredients in a salad.
- Filtration uses filters to separate solids from liquids like filtering coffee grounds from coffee.
- Sieving separates mixtures by particle size using screens with small holes like sieving sand from pebbles.
- Extraction and evaporation dissolve one component in a solvent then remove the solvent, leaving the separated components.
Heterogeneous and Homogeneous Mixtures are discussed in this presentation. High School chemistry, physical science, environmental science, earth systems, and material science students will benefit from this presentation. All essential introductory concepts are presented here.
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.
Heterogeneous and Homogeneous Mixtures are discussed in this presentation. High School chemistry, physical science, environmental science, earth systems, and material science students will benefit from this presentation. All essential introductory concepts are presented here.
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.
Special Properties of Solid
Note:
This powerpoint presentation is also uploaded on my youtube channel. Please come and check it out
SUBSCRIBE TO JDREYES_17 :https://www.youtube.com/channel/UCAIxMXdlhO9vWyNCfProf3A
Special Properties of Solid
Note:
This powerpoint presentation is also uploaded on my youtube channel. Please come and check it out
SUBSCRIBE TO JDREYES_17 :https://www.youtube.com/channel/UCAIxMXdlhO9vWyNCfProf3A
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Biological screening of herbal drugs: Introduction and Need for
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Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
2. What is a mixture?
• When two or more materials
or substances are mixed
together but do not chemically
combine.
• This means they retain their
original properties.
• This means they can be
separated by physical means.
3. What are the different ways of
separating mixtures?
• Magnetism
• Hand separation
• Filtration
• Sifting or sieving
• Extraction and evaporation
• Chromatography
4. Magnetism
• If one component of the mixture has magnetic
properties, you could use a magnet to
separate the mixture. Iron, nickel, and cobalt
are all materials that are magnetic.
• Not all metals are magnetic: gold, silver, and
aluminum are examples of metals that are not
magnetic.
6. Hand separation
• Separating the parts of a mixture by hand.
• Only useful when the particles are large
enough to be seen clearly.
• Useful for: separating parts of a salad.
7. Example of hand separation:
• Using your fork to separate tomatoes, lettuce,
cucumber, onions, etc. in your salad.
8. Filtration
• Used when separating a solid substance from
a fluid (a liquid or a gas) by passing a mixture
through a porous material such as a type of
filter.
• Works by letting the fluid pass through but
not the solid.
• Examples of filters: coffee filter, cloth, oil
filter, even sand!
9. Example of filtration:
• Using a coffee filter to separate the coffee
flavor from the coffee beans.
10. Sifting or sieving
• Used to separate a dry
mixture which contains
substances of different
sizes by passing it through
a sieve, a device containing
tiny holes.
12. Extraction
• Used to separate an insoluble solid
(something that doesn’t dissolve in a liquid)
from a soluble solid (something that DOES
dissolve in a liquid). Done by adding a solvent
(liquid that does the dissolving) to the
mixture. Then pouring the liquid through a
filter.
13. Example of extraction
• With a mixture of sugar and sand, pouring
water in the mixture which causes the sugar
to dissolve. Then pouring the solution
through a filter, causing the sand to separate
from the sugar water.
14. Evaporation
• Allowing the liquid
to evaporate,
leaving the soluble
solid behind.
• Example: heating
sugar water. The
water evaporates
and the sugar
crystals are left
behind.
15. Example of using extraction and
evaporation together:
• Using water to dissolve sugar, then letting the
water evaporate, leaving the sugar behind.
16. Chromatography
• Used to separate dissolved substances in a
solution from each other.
Mixture Components
Separation
Stationary Phase
Mobile Phase
