This document provides an introduction to chemistry, including:
1. Definitions of key terms like matter, elements, compounds, properties and changes in matter.
2. The major branches of chemistry like organic, inorganic, physical and analytical chemistry.
3. An overview of the periodic table, including periodic trends and classifications of elements as metals, nonmetals, metalloids and noble gases.
Describe the structure of solids, liquids and gases in terms of particle separation, arrangement and types of motion
State the distinguishing properties of solids, liquids and gases
• Describe and explain diffusion (1 core)
• Describe evidence for the movement of particles in gases and liquids (1 core)
Describe changes of state in terms of melting, boiling, evaporation, freezing, condensation and sublimation
Explain changes of state in terms of the kinetic theory
In a Series-A funding, a DalinYebo's group company, Cobelec (Pty) Ltd, wishes to raise R10m to complete the BFS, in exchange for 20-25% share holding in the uThukela GreenEnergyPark™ SPV.
The investor will have a first right of refusal to participate in the Series-B finance, during which we shall raise R80 million, about R24million in equity and R56million in project loan (30:70 gearing). R18 million of working capital would either be funded with a short term loan, but may not be necessary as there is and immediate an strong cash-flow.
For additional information, visit:
- www.dalinyebo.com/presentation/uthukela-greenenergypark
- www.dalinyebo.com/greenenergypark
- www.greenenergypark.co.za
Describe the structure of solids, liquids and gases in terms of particle separation, arrangement and types of motion
State the distinguishing properties of solids, liquids and gases
• Describe and explain diffusion (1 core)
• Describe evidence for the movement of particles in gases and liquids (1 core)
Describe changes of state in terms of melting, boiling, evaporation, freezing, condensation and sublimation
Explain changes of state in terms of the kinetic theory
In a Series-A funding, a DalinYebo's group company, Cobelec (Pty) Ltd, wishes to raise R10m to complete the BFS, in exchange for 20-25% share holding in the uThukela GreenEnergyPark™ SPV.
The investor will have a first right of refusal to participate in the Series-B finance, during which we shall raise R80 million, about R24million in equity and R56million in project loan (30:70 gearing). R18 million of working capital would either be funded with a short term loan, but may not be necessary as there is and immediate an strong cash-flow.
For additional information, visit:
- www.dalinyebo.com/presentation/uthukela-greenenergypark
- www.dalinyebo.com/greenenergypark
- www.greenenergypark.co.za
Biological screening of herbal drugs: Introduction and Need for
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The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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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.
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19. Development of the Periodic Table The modern periodic table of elements is mostly the work of Russian chemist Dmitri Mendeleev (1834-1907). It was set up in such a way so group elements in columns according to their properties, but also put them in ascending order according to their atomic number. Let ’s observe: The vertical columns are called groups ; the horizontal rows are called periods . Periodic Law : when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical & chemical properties.
20. The vertical columns are called groups , or families . There are 18 groups on the periodic table. Groups
21. The horizontal rows are called periods . Periodic Law : when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical & chemical properties.
22. Periodic Trends Elements in the same group : physically and chemically similar Elements in the same period : ordered in increasing size and atomic number.
23. Metals Characteristics of metals: excellent conductors of heat and electricity, very reactive, usually make positive ions when dissolved in solution, mix well to make alloys.
24. Alkali Metals Group 1A: Li, Na, K, Rb, Cs, Fr. Does not include hydrogen. ▪ They are very reactive because of the lone electron in their outer shell. ▪ Very shiny and light in weight. http://www.youtube.com/watch?v=OFG4Yr7lQzw&feature=related http://www.youtube.com/watch?v=uqDWbknpiVk&feature=related
25. Alkali Earth Metals Group 2A: Be, Mg, Ca, Sr, Ba, Ra ▪ Not as reactive as alkali metals, but form bonds very easily.
26. Transition Metals Have a special electron shell arrangement where two of their outer shells are not full. This allows them to bond to many other elements in a variety of shapes.
27. Halogens Have an outer shell that is almost full, therefore very reactive. Often bond with metals and elements from group one (alkali metals). When an halogen combines with another element, the resulting compound is called a halide .
28. Inert Gases (Noble gases) Include: He, Ne, Ar, Kr, Xe, Rn. Have a full outer shell and are very unreactive , hence the title “inert”.
29. Lanthanide Series · Also known as rare-earth or inner-transition elements. · Fifteen elements that start with lanthanum (La) at atomic number 57 and finishing up with lutetium (Lu) at number 71
30. Actinide Series · These elements are all radioactive and only some are found in nature; some elements with higher numbers have only been made in labs. · Fifteen elements that start with actinium (Ac) at atomic number 89 and finishing up with lawrencium (Lr) at number 103
31. Metalloids Metalloids are found on the periodic table between the metals and non-metals. Appropriately, they exhibit characteristics of both metals and non-metals.
32. Nonmetals Many nonmetals are gases at room temperature: N; O; F; Cl . These are elements that are poor conductors of heat and electricity .
Editor's Notes
Use kids as matter. Composition – what you ’re made of. Hair, eyes, ears, arms, legs, feet… structure- what order is that stuff in. ok its all in the same order but blonde vs brunette..short vs. tall. We’re all made up of the same parts but in different ways (elements). Properties..tall = good at basketball maybe or smart..some could change and some stay the same. Get stronger (lift weights) how much energy are you expending to do so? What is it made of? How is it put together? How do those things make it unique? How can it change..and at what cost (energy)?
Think of it like speed..60mph is always 60mph even if I was accelerating or deccerlating
Piece of paper…crumple it, rip it, cut it..still paper. Light it on fire..not paper anymore. (color often a good indicator or chemical change)
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