Oxidation occurs when metals react with oxygen in the air, changing their atoms and forming rust on iron. Apples and potatoes also oxidize when cut or peeled as they combine with oxygen and turn brown.
Fermentation is a chemical reaction where fungi or bacteria change organic substances, producing alcohol or lactic acid without oxygen. It is used to make foods like cheese and bread, and drinks like wine. Fermentation also helps decompose fruits and vegetables and can preserve foods.
Combustion is a chemical reaction that produces energy in the form of heat and light through the reaction of oxygen with fuels like wood, gas, or oil. During wood combustion, fuel turns to heat, ash, and smoke, while petrol
Unit 2, Lesson 2.6 - Elements and Compoundsjudan1970
Unit 2, Lesson 2.6 - Elements and Compounds
Lesson Outline:
1. Matter: An Overview
2. Pure Substance
3. Element vs. Compound
4. Metals, Metalloids, Nonmetals
5. Law of Definite Composition
Unit 2, Lesson 2.6 - Elements and Compoundsjudan1970
Unit 2, Lesson 2.6 - Elements and Compounds
Lesson Outline:
1. Matter: An Overview
2. Pure Substance
3. Element vs. Compound
4. Metals, Metalloids, Nonmetals
5. Law of Definite Composition
It all is about flame and combustion.
WHAT IS COMBUSTION
Combustion or burning is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species. The release of heat can produce light in the form of either glowing or a flame. Fuels of interest often include organic compounds (especially hydrocarbons) in the gas, liquid or solid phase.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element.
WHAT IS FUEL
A flame is the visible, gaseous part of a fire. It is caused by a highly exothermic reaction taking place in a thin zone. Some flames, such as the flame of a burning candle, are hot enough to have ionized gaseous components and can be considered plasma. This subject is, however, hotly debate
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.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Palestine last event orientationfvgnh .pptxRaedMohamed3
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.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
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!
3. Oxidation
Some metals have a chemical
property which makes them react
when they are exposed to air.
Atoms in iron react with the
oxygen in the air. When this
happens, the atoms are changed
into a new substance.This new
substance has a brown colour and
is called rust.This process is called
oxidation. Oxidation also occurs in
some foods. Apples and potatoes
oxidise when they are peeled or
cut.
4. Fermentation
Fermentation is a chemical reaction where fungi
or bacteria change organic substances into other
substances. During the process of fermentation,
fungi produce alcohol and bacteria produce lactic
acid. Oxygen does not take part in this reaction.
Fermentation is used to make foods such as
cheese or bread and drinks such as wine.
Fermentation also occurs naturally in sugars in
fruits or vegetables, which helps with
decomposition.
Fermentation is also used to preserve food all over
the world.Vegetables, fruit, fish, and meat can all
be stored for longer if they are fermented first.
5. Combustion
Combustion is a chemical reaction that produces
energy in the form of heat and light. Combustion or
burning can happen when oxygen from the atmosphere
reacts with a fuel. Some examples of fuels are wood ,
gas or oil. When they burn, the atoms in the substance
react and form new substances, such as ash and smoke.
During wood combustion, fuel turns into heat, ash and
smoke.
During petrol combustion, fuel is converted into kinetic
energy and exhaust gases.
6. Challenge 1
1.During oxidation of iron __________is
formed.
2.When apple flesh combines with
___________, it oxidises and
turns______________
3.What is needed for fermentation? What gas
is released during fermentation?
4.What energy is produced during
combustion?
5. Which gases does petrol combustion
exhaust?
7. Energy
Changes caused by different forms of energy.
We can understand energy as the ability of
something to cause change. WE can then
classify energy changes according to the forms
the energy takes, and then show the energy
changes in the form of an energy chain.
There are two categories of energy: Potential
energy is energy that is stored, so that
through some process it can be used to make a
change happen. For example?
Kinetic energy is that the energy that things
have through movement. For example?
8. Some energy producers
These photos show
some different ways in
which energy from
nature is harnessed to
make electricity. What
are they?
Editor's Notes
Chemical: battery, elastic (stretched rubber band), gravitational potential energy (a rock sitting at the edge of a cliff)
Thermal power station, hydroelectric dam, wind turbines, photovoltaic solar panels