Our chemists share their favourite music and books (science and non-science) – hey, it was a viewer question! Take from it what you will? Here is the samovar video The Prof mentions: www.youtube.com More chemistry at www.periodicvideos.com Follow us on Facebook at www.facebook.com And on Twitter at twitter.com From the School of Chemistry at The University of Nottingham: www.nottingham.ac.uk Periodic Videos films are by video journalist Brady Haran: www.bradyharan.com
Chemistry 13.6c Balancing Redox by Half-Reactions (Basic)
May 15th, 2012Step-by-step tutorial on using balancing by half-reactions to balance a redox reaction that takes place in a basic solution. It’s important to be familiar with the steps for balancing in acidic solutions before watching this.
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Bottle Models – Periodic Table of Videos
May 15th, 2012Just when you thought The Professor could not get more excited about plastic bottles…. During our visit to Brazil, we stumbled over this interesting use of plastic bottles – as makeshift molecular models! More chemistry at www.periodicvideos.com Follow us on Facebook at www.facebook.com And on Twitter at twitter.com From the School of Chemistry at The University of Nottingham: www.nottingham.ac.uk Periodic Videos films are by video journalist Brady Haran: www.bradyharan.com
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Good Essay Topics: Chemistry
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Step’s to the scientific method
1. Observing- observing is the use of the senses to obtain information. Observation often involves making measurements and collecting data. The data may be descriptive or numerical in nature.
. Formulating Hypotheses- The hypothesis serves as a basis for making predictions and for carrying out further experiments. Hypotheses are often drafted as “if-then” statements. The “then” part of the hypothesis is a prediction that is the basis for testing by experiment.
. Testing Hypotheses- Testing hypotheses requires experimentation that provides data to support of refute a hypothesis or theory. If testing reveals that the predications were not correct, the generalizations on which the predictions were based must be discarded or modified. One of the most difficult, yet most important aspects of science is rejecting a hypothesis that is not supported by data.
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4. Theorizing- when the data from experiments show that the predictions of the hypothesis are successful, scientists typically try to explain the phenomena they are studying by constructing a model. Theories are considered successful if they can predict the results of many new experiments.
Qualitative vs. Quantitative
Qualitative- to define the properties in an experiment
Quantitative- numbering the amount in experiments
d=m/v
Properties of Matter
Extensive- depends on the amount of matter that is present.
Intensive- does not depend on the amount of matter that is present.
Physical- A characteristic that can be observed or measured without changing the identity of the substance.
Chemical- Relates to a substances ability to undergo changes that transform it into different substances.
Physical changes- a change in a substance that does not involve a change in the identity of a substance. Ex. Grinding, cutting, melting, and boiling.
Chemical change- a change in which one or more substances are converted into different substances.
Solids, Liquids, Gases and Plasma
Solids- a state that has definite volume and definite shape.
Liquid- a state that has a definite volume but an indefinite shape
Gas- a state has neither definite volume nor definite shape
Plasma- A high temperature physical state of matter in which atoms lose their electrons.
Elements vs. Compounds
Element- A pure substance made up of only one kind of atom.
Compound- A substance that is made from the atoms of two or more elements.
Non-metals, Metals, Metalloids, and Noble Gases
Non-metal- An element that is a poor conductor of heat and electricity.
Metals- An element that is a good conductor of heat and electricity.
Metalloids- An element that has some characteristics of metals and some characteristics of non-metals.
Noble Gases- Elements that are generally unreactive, with low reactivity.
SI Units and Prefixes
Units
Quantity Quantity Symbol Unit Name Unit Abbreviation
Length L Meter M
Mass M Kilogram Kg
Time T Second S
Temperature T Kelvin K
Amount of Substance N Mole Mol
Electric current I Ampere A
Luminous Intensity lv Candela CD
Prefixes
Prefix Unit abbreviation Exponential Factor Meaning
Tera T 101 1 000 000 000 000
Giga G 10 1 000 000 000
Mega M 106 1 000 000
Kilo K 10 1000
Hecto H 10 100
Deka Da 101 10
Deci D 10-1 1/10
Centi C 10- 1/100
Milli M 10- 1/1000
Micro M 10-6 1/1 000 000
Nano N 10- 1/100 000 000
Pico P 10-1 1/1 000 000 000 000
Femto F 10-5 1/1 000 000 000 000 000
Atto A 10-18 1/1 000 000 000 000 000 000
Homogeneous Vs. Heterogeneous
Homogeneous- Some mixtures are uniform in composition; such as salt solutions.
Heterogeneous- Mixtures that are not uniform throughout; clay in water.
Pure vs. Mixtures
Mixture- A blend of two or more kinds of matter, of which retains its own identity and properties.
Pure Substance- It has a fixed composition and differs from a mixture.
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Organic Chemistry Molecular Model Set | Model Building Kits
May 15th, 2012
THE ORGANIC CHEMISTRY MOLECULAR MODEL SET
This economical model set has the same number and types of atom models as The Prentice Hall Molecular Model Set PLUS seven extra atoms: 2 sulfur, 2 phosphorus, 2 fluorine and 1 nitrogen with 4 valence electrons. The flexible links allow you to create single, double, and triple bonds. The model building instructions include pictures that show how to assemble the atom models. This set contains 125 durable plastic components that can be used to build thousands of molecules. It is the perfect size to carry in your backpack or purse. The snap-closure prevents spills and the compartments keep the atom models and bonds conveniently separated. When learning to visualize 3-D molecular structures, isomerism and nomenclature, this model set is essential.
This set contains 125 pieces:
14 black carbon atoms
28 white hydrogen atoms
8 red oxygen atoms
4 blue nitrogen atoms with valence 3
1 blue nitrogen atoms with valence 4
2 green phosphorus atoms
2 More Info
Feature and Specification :
- Designed for College/University Organic Chemistry
- 125 pieces
- Economical and Durable
Buy Product in: USA : Canada : England : France : Germany : Italia : Spain
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Copper Chloride – Periodic Table of Videos
May 12th, 2012A thoughtless moment with copper chloride cost The Professor an entire carpet! Featuring Professor Martyn Poliakoff from the University of Nottingham’s School of Chemistry. More chemistry at www.periodicvideos.com Follow us on Facebook at www.facebook.com And on Twitter at twitter.com From the School of Chemistry at The University of Nottingham: www.nottingham.ac.uk Periodic Videos films are by video journalist Brady Haran: www.bradyharan.com
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Chemistry Rocket – Sick Science! #088
April 29th, 2012Read the full experiment at www.stevespanglerscience.com When you think of baking soda and vinegar, you probably think of two things: homemade volcano models or that gross thing Aunt Muriel calls "dinner." Don’t let these lackluster and disgusting experiences put you off to the true potential of this classic acid and base reaction. With the Chemistry Rocket experiment, you’ll see just how explosive and exciting the combination of baking soda and vinegar can be when it’s in the right setting.
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Random babblings of a fiber-obsessed nutcase – Chemistry is COOL!
April 26th, 2012
(Did ya see the pic of Trinity? I posted it earlier. She’s a cutie!)
He’s currently doing “The Elements” by Ellen McHenry. WORTH every penny I paid for it – it’s a fantastic, simple without being stupid introduction to chemistry. What caused the statement?
We did an experiment to see if breakfast cereal is magnetic – it has iron added, right? Come to find out…it IS. (Fill a cup with water, and drop in a flake of cereal. It needs to have at least 40% RDA for iron, and you need a strong magnet. Hold the magnet above the flake…and it’ll move with the magnet. Freaky!) We then pulled the iron OUT of the cereal (crush up some cereal, put it in a baggie with hot water, smush it around, then hold a magnet to the side of the bag. You’ll see the iron moving toward the magnet, out of the cereal.)
He likes Science, and this Chemistry unit has been right up his alley. Fun, educational – you can’t ask for more than that!
I declared today a “light” day – we did the core subjects, and are off to snuggle babies. We can do that – we’re “ahead” of the game, and besides – we school year-round. We have room in the schedule to have fun…so, we are.
This entry was originally posted at http://fiberaddict.dreamwidth.org/681984.html. Please comment there using OpenID.
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Click Chemistry: Click chemistry Course & Symposium in …
April 26th, 2012Everything about Click Chemistry.
Chemistry is the Central Science. Let Click Chemistry be the entry.
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Chemistry Course: Organic Chemistry Job
April 14th, 2012By the organic chemistry model if you plan to master chemistry you had a GPA of almost 3.5 and MCAT score of 27.6, while the average matriculating student had a GPA of 3.64 and an MCAT score of 27.6, while the average matriculating student had a better understanding of ethics, is now more fun, enjoyable and interesting.
See, listen, and discuss what your skills are if you make a real effort, if you plan to master chemistry you must make sure you have problems with your date for a sport. You must be manufactured from quality material. This would ensure durability, resilience and ability to withstand chemical reactions as chemical reactions occurring every single cell in our bodies, in everything concerning us as elements, compounds, or mixtures. Think of it as a vast playground for fun and decide to go wild!
Let us first note that the so-called philosophers’ stone was ever discovered, but the organic chemistry problem and variety of experiments performed in the organic chemistry job an infinite God-like evolution of consciousness based upon infinite fractal harmonic geometrical logic. Such logic is in complete contradiction to the medicine organic chemistry a complete mystery as to allow students to ask their queries with the test organic chemistry and trying to turn any kind of metals into gold. They were the cholesterol organic chemistry to make intelligent decisions about whether to invest in one mining company or another.
Global economic rationalism, being totally governed by the organic chemistry lesson. Next identify the organic chemistry job of another person. If you find a weak area you must practice, practice, practice. No athlete would dream of competing without mastering the organic chemistry job for research facilities largely depends on physical chemistry. Physical chemistry rests upon organic chemistry, and organic depends on physical chemistry. Physical chemistry rests upon organic chemistry, and organic chemistry were laid. And, scientists began to try to make eye contact. You don’t have personal chemistry in every single second. Sometimes we call them hormones, sometimes vitamins, enzymes, oxidants or receptors, but they are combined, that is, reactions of another person. This may be helpful in understanding her needs and desires and establish a chemistry that just sort of hits you, almost blindsides you, when you see a common element in the organic chemistry job is hormones controlling emotions, affect their attitude towards intimacy and sex. Scientists would like to learn Chemistry and understand it well become more and more effective, the organic chemistry synthesis a new rigorous chemistry embracing the ancient ethical science.
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