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Learners examine a table containing the names of common cations and anions.
- Subjects:
- Chemistry
- Keywords:
- Ionic structure Ions
- Resource Type:
- Others
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Others
In this animated object, learners examine the formation of ester bonds in the synthesis of lipids using triglyceride biosynthesis as an example. Ester bond formation is described as a dehydration synthesis reaction.
- Subjects:
- Chemistry
- Keywords:
- Organic compounds Esters
- Resource Type:
- Others
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Video
Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.
- Subjects:
- Laboratory Techniques and Safety and Chemistry
- Keywords:
- Chemical laboratories Chemical laboratories -- Technique
- Resource Type:
- Video
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Video
As we keep pumping carbon dioxide into the atmosphere, more of it is dissolving in the oceans, leading to drastic changes in the water's chemistry. Triona McGrath researches this process, known as ocean acidification, and in this talk she takes us for a dive into an oceanographer's world. Learn more about how the "evil twin of climate change" is impacting the ocean -- and the life that depends on it.
- Subjects:
- Environmental Sciences and Chemistry
- Keywords:
- Marine pollution Oceanography
- Resource Type:
- Video
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Video
Jakob Magolan is here to change your perception of organic chemistry. In an accessible talk packed with striking graphics, he teaches us the basics while breaking the stereotype that organic chemistry is something to be afraid of.
- Subjects:
- Chemistry
- Keywords:
- Chemistry Organic
- Resource Type:
- Video
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Video
You stick cookie dough into an oven, and magically, you get a plate of warm, gooey cookies. Except it's not magic; it's science. Stephanie Warren explains via basic chemistry principles how the dough spreads out, at what temperature we can kill salmonella, and why that intoxicating smell wafting from your oven indicates that the cookies are ready for eating.
- Subjects:
- Chemistry and Food Science
- Keywords:
- Food -- Composition Food -- Analysis
- Resource Type:
- Video
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Video
Ever wondered how your smartphone works? Take a journey down to the atomic level with scientist Cathy Mulzer, who reveals how almost every component of our high-powered devices exists thanks to chemists -- and not the Silicon Valley entrepreneurs that come to most people's minds. As she puts it: "Chemistry is the hero of electronic communications."
- Subjects:
- Chemistry
- Keywords:
- Photolithography Chemistry Smartphones Telecommunication
- Resource Type:
- Video
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Video
This channel contains a complete list of physics videos, as well as hundreds of chemistry, astronomy, math, and mechanical engineering videos. The physics videos explain the fundamental concepts of physics with some easy to follow examples on how to solve physics problems. The chemistry videos cover all the basic topics of chemistry, the astronomy videos explain the wonders of Earth and our Universe, and the math videos cover many topics in algebra, trigonometry, pre-calculus, calculus and differential equations.
- Subjects:
- Chemistry, Mathematics and Statistics, Cosmology and Astronomy, Physics, Mechanical Engineering, and Electrical Engineering
- Keywords:
- Chemistry Astronomy Electrical engineering Physics Mathematics Mechanical engineering Kalman filtering
- Resource Type:
- Video
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Video
Comparing initial rates to determine the order of reaction is a very common question in Kinetics.
Let's take a look at an example:
The objective is to choose a pair of experiments for comparison where the concentration of a reactant changes and ideally the concentration of other reactants remain constant. This means that any change in the initial rates of the experiments must be due to the change in the concentration of that reactant, and we can figure out the order from there.
1. Order of Reaction with respect to HCl
Comparing experiments 1 and 3, concentration of HCl doubles and there is no change in concentration of sucrose. So the change in initial rates must be due to HCl only. We can work out the change in initial rates to be 2 times. This means when concentration of HCl doubles, initial rate doubles. Therefore order of the reaction with respect to HCl will be order 1. For comparison, if order of reaction is zero, initial rate will remain unchanged when concentration of HCl doubles. If order of reaction is 2, initial rate will increase by 4 times (2^2 times) when concentration of HCl doubles. Since we only have 3 possible orders to consider, figuring out the order of reaction is quite straightforward.
2. Order of Reaction with respect to sucrose
Comparing experiments 1 and 2, concentration of sucrose increase by 1.5 times and there is no change in concentration of HCl. So the increase in initial rates by 1.5 times must be due to sucrose only. Since this is a proportionate increase, order of reaction with respect to sucrose is also order 1. Finally we can write out the rate equation for this reaction to be: rate = k [HCl][sucrose]
- Course related:
- ABCT 2701 Analytical Chemistry
- Subjects:
- Chemistry
- Keywords:
- Chemistry Physical theoretical
- Resource Type:
- Video
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e-journal
In this journal platform, you can find the articles which published under the Creative Commons Attribution-NonCommercial 4.0 International License. The journal covers a various disciplines, including:
Biomedical & Life Sciences
Business & Management
Chemistry & Material Science
Computer & Communications
Earth & Environmental Science
Engineering
Humanities
Physics & Mathematics
Social Sciences
- Subjects:
- Management, Physics, Chemistry, Computing, Mathematics and Statistics, Biology, and Environmental Sciences
- Keywords:
- Industrial management Computer science Management Physics Mathematics Social Sciences Chemistry Engineering Environmental sciences Humanities Biology
- Resource Type:
- e-journal