Friday, May 17, 2013
10 famous figures of chemical scientists:
adapted from: esdikimia.wordpress.com/2011/06/29/10-tokoh-kimia
1. John Dalton (1766 - 1844)
Originator of modern atomic theory which states that matter is composed of atoms that can not be further subdivided. Each
- each element consists of atoms with identical properties and mass,
and compounds are formed when atoms of different elements combine in a
fixed composition.
2. Amadeo Avogadro (1776 - 1856)
An Italian scientist who sparked through hopotesisnya Avogadro's law
that "at the same pressure and temperature, the gases have the same
volume the same number of particles".
3. Humphry Davy (1778 - 1829)
A scientist who succeeded in extracting metals sodium and potassium from hidroksidanya through electrolysis. He is known as a pioneer of electrolysis of the research results.
4. James Prescott Joule (1818 - 1889)
A scientist who formulated the law of conservation of energy, namely "Energy can neither be created nor in musnakan".
5. John Tyndall (1820 - 1893)
An English scientist who proposed the event of light scattering by colloidal particles known as Tyndal effect. Tyndall effect can be used to distinguish sistemkoloid and true solution.
6. Friedrich Kekulé (1829 - 1896)
Chemist
who is known as the ring because it successfully reveals how the six
carbon atoms of benzene molecules bind to the six hydrogen atoms.
7. Sir William Crookes (1829 - 1919)
Scientists
from Britain who argued that merukana cathode ray particles are
negatively charged, has mass, and is owned by all the material.
8. Dmitri Ivanovich Mendeleyev (1834 - 1907)
Russian chemist who created the system based on improved periodek elements' atomic numbers ". this number indicates the number of protons contained in the nucleus of an atom. the number of protons equals the number of electrons surrounding the atom-free.
9. Henri Louis Le Chatelier (1850-19360)
A
French chemist who did research on chemical equilibrium, and present
one of the equilibrium principle is "if the action is something done a
certain equilibrium, then the equilibrium will be shifted to eliminate
the impact of the action".
10.Svante Arrhenius (1859-1927)
A scientist Sweden who got Hadia Nobel Prize for his work on ionization. He
suggested that the compounds in solution can be decomposed into ions
her, and the strength of the acid in solution aqua depending on the
concentration of hydrogen ions in it.
Friday, May 10, 2013
1. CHEMISTRY QUIZ 1
2. CHEMISTRY QUIZ 2
3. CHEMISTRY QUIZ 3
4. CHEMISTRY QUIZ 4
Q: What do you do with a sick chemist?
A: If you can't helium, and you can't curium, then you might as well barium.
A: If you can't helium, and you can't curium, then you might as well barium.
Q: Did you hear oxygen went on a date with potassium?
A: It went OK.
A: It went OK.
Q: Anyone know any jokes about sodium?
A: Na
A: Na
Helium walks into a bar,
The bar tender says "We don't serve noble gasses in here."
Helium doesn't react.
The bar tender says "We don't serve noble gasses in here."
Helium doesn't react.
Silver walks up to Gold in a bar and says, "AU, get outta here!"
Two chemists go into a restaurant.
The first one says "I think I'll have an H2O."
The second one says "I think I'll have an H2O too" -- and he died.
The first one says "I think I'll have an H2O."
The second one says "I think I'll have an H2O too" -- and he died.
Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe
A: HeHe
Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar?
A: He got Avogadro's number!
A: He got Avogadro's number!
A proton and a neutron are walking down the street.
The proton says, "Wait, I dropped an electron help me look for it."
The neutron says "Are you sure?" The proton replies "I'm positive."
The proton says, "Wait, I dropped an electron help me look for it."
The neutron says "Are you sure?" The proton replies "I'm positive."
Money has recently been discovered to be a not-yet-identified super heavy element.
The proposed name is: Un-obtainium.
The proposed name is: Un-obtainium.
As an ion chromatography chemist I made this one up:
Anions aren't negative, they're just misunderstood.
Anions aren't negative, they're just misunderstood.
The optimist sees the glass half full.
The pessimist sees the glass half empty.
The chemist see the glass completely full, half in the liquid state and half in the vapor state.
The pessimist sees the glass half empty.
The chemist see the glass completely full, half in the liquid state and half in the vapor state.
Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms?
A: A ferrous wheel.
A: A ferrous wheel.
Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.
A: H2O cubed.
A neutron walks into a bar. He asks the bartender, "How much for a
beer?" The bartender offers him a warm smile and says, "For you, no
charge".
Q: What do you do with a dead chemist?
A: Barium
A: Barium
Q: What did one ion say to the other?
A: I've got my ion you.
A: I've got my ion you.
Q: Why did the chemist sole and heel his shoes with silicone rubber?
A: To reduce his carbon footprint.
A: To reduce his carbon footprint.
Q: What do you call a tooth in a glass of water?
A: One molar solution.
A: One molar solution.
A small piece of sodium that lived in a test tube fell in love with a
Bunsen burner. "Oh Bunsen, my flame," the sodium pined. "I melt whenever
I see you," The Bunsen burner replied, "It's just a phase you're going
through."
Q: What do you call a clown who's in jail?
A: A silicon.
A: A silicon.
Q: What emotional disorder does a gas chomatograph suffer from?
A: Separation anxiety.
A: Separation anxiety.
Q: Why does hamburger yield lower energy than steak?
A: Because it's in the ground state.
A: Because it's in the ground state.
Here are some fun and interesting chemistry facts for you.
- The only elements that are liquid at room temperature are bromine and mercury. However, you can melt gallium by holding a lump in the warmth of your hand.
- Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it.
- If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass.
- There is about 1/2 lb or 250 g of salt (NaCl) in the average adult human body.
- A pure element can take many forms. For example, diamond and graphite both are forms of pure carbon.
- The chemical name for water (H2O) is dihydrogen monoxide.
- The only letter that doesn't appear on the periodic table is J.
- Lightning strikes produce O3, which is ozone, and strengthen the ozone layer of the atmosphere.
- Although oxygen gas is colorless, the liquid and solid forms of oxygen are blue.
- The human body contains enough carbon to provide 'lead' (which is really graphite) for about 9,000 pencils.
- Hydrogen is the most abundant element in the universe, while oxygen is the most abundant element in the earth's atmosphere, crust, and oceans (about 49.5%).
- The rarest naturally-occurring element in the earth's crust may be astatine. The entire crust appears to contain about 28 g of the element.
- Hydrofluoric acid is so corrosive that it will dissolve glass. Although it is corrosive, hydrofluoric acid is considered to be a 'weak acid'.
- One bucket full of water contains more atoms than there are bucketfuls of water in the Atlantic ocean.
- Approximately 20% of the oxygen in the atmosphere was produced by the Amazon rainforest.
- Helium balloons float because helium is lighter than air.
- Bee stings are acidic while wasp stings are alkaline.
- Hot peppers get their heat from a molecule called capsaicin. While the molecule acts as an irritant to mammals, including humans, birds lack the receptor responsible for the effect and are immune to the burning sensation from exposure.
- Dry ice is the solid form of carbon dioxide, CO2.
- Liquid air has a bluish tint, similar to water.
1. This is the last presentation for the subject. this is my turn and my fellow friends from group 9. We had chosen to to share with other the microsoft excel.
2. Up till i manage to complete all assignment and task given in this subject, Overall, i got six assignment. The first one is discussion about the future learning; school in the cloud. the hardest one is our fifth experiment, whereby i had to make my own video for learning resources
Feel Free To Say Thousand Words
2. Up till i manage to complete all assignment and task given in this subject, Overall, i got six assignment. The first one is discussion about the future learning; school in the cloud. the hardest one is our fifth experiment, whereby i had to make my own video for learning resources
Wednesday, May 8, 2013
Carbon - The Chemical Basis for Life
2. Carbon is a nonmetal that can bond with itself and many other chemical elements,
forming nearly ten million compounds.
3. Elemental carbon can take the form of one of the hardest substances (diamond) or one of
the softest (graphite).
4. Carbon is made in the interiors of stars, though it was not produced in the Big Bang.
5. Carbon compounds have limitless uses. In its elemental form, diamond is a gemstone
and used for drilling/cutting; graphite is used in pencils, as a lubricant, and to protect
against rust; while charcoal is used to remove toxins, tastes, and odors. The isotope
Carbon-14 is used in radiocarbon dating.
6. Carbon has the highest melting/sublimation point of the elements. The melting point of
diamond is ~3550°C, with the sublimation point of carbon around 3800°C.
8. The origin of the name 'carbon' comes from the Latin word carbo, for charcoal. The
German and French words for charoal are similar.
9. Pure carbon is considered non-toxic, although inhalation of fine particles, such as soot,
can damage lung tissue.
10. Carbon is the fourth most abundant element in the universe (hydrogen, helium, and
oxygen are found in higher amounts, by mass).
Tuesday, May 7, 2013
Our journey in the world of ICT became more exciting. Every week, i found out that myself being more intelligent. i love it.
9. PREZI (Group 8)
Prezi is a presentation tool that helps you organize and share your ideas.
At first glance, Prezi may seem like an inferior example of presentation software. But closer inspection reveals that Prezi is simply so unique, comparing it to traditional slideshow makers . Prezi displays information not as a series of slides, but as one large board that zooms in on specific information or images..
With Prezi, a presentation is created as a whole board. You lay out the information and visual aids however you like, then you create a “path” for the pan-and-zoom functions to follow. The end result? A presentation that starts with one bit of information, zooms out, pans to another bit of information, zooms in, etc. Certainly an interesting alternative to typical slideshow presentation.
You can add text and multimedia items, like photo, video and audio files. There are two cookie-cutter shape options, as well as the word processing ability to do bulleted text. There are also 10 themes to choose from, which include color palates and fonts. You can create your own theme and save it for future use, as well. And there is a form of paragraph style functionality – you can preset three styles and choose from them when you create text blocks.
Want to know more about Prezi, kindly click this link: http://prezi.com/ .
10. Microsoft Power Point (Mouse Mischief )
Very useful while carried out a lesson in a class room. This tool can help teacher to make sure their student are paying attention.
What is it exacly?
Mouse Mischief integrates into Microsoft PowerPoint 2010 and Microsoft Office PowerPoint 2007, letting you insert questions, polls, and drawing activity slides into your lessons.
Students can actively participate in these lessons by using their own mice to click, circle, cross out, or draw answers on the screen.
Mouse Mischief integrates into Microsoft PowerPoint 2010 and Microsoft Office PowerPoint 2007, letting you insert questions, polls, and drawing activity slides into your lessons.
Students can actively participate in these lessons by using their own mice to click, circle, cross out, or draw answers on the screen.
Microsoft Mouse Mischief is a new free add-on to Microsoft PowerPoint. Mouse Mischief is designed as an inexpensive alternative to clicker-type response systems. Mouse Mischief allows teachers to put multiple choice questions into their PowerPoint slides. Students can then answer the questions using mice connected to their teacher's computer. Mouse Mischief works with both wired and wireless mice. You can learn more and download Mouse Mischief here.
Applications for EducationI have not had a chance to try Mouse Mischief with students yet, but it seems like it could be a good way to get feedback from students during a lesson. If you're school already has Microsoft PowerPoint for teachers, this is a nice free addition for you.
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| adapted from : Notebooking Nook: October 2009 . notebookingnook.blogspot.com |
Being a good citizen makes our world a safer and more peaceful place. Our small efforts can have a large impact.
Saturday, May 4, 2013
My name is Nor Azilawaty bt Azmi. I was graduated from University Science of Malaysia in course of chemical engineering but somehow i found out that teaching is a fascinating job.
I'm happily married with three children. i live in Gopeng, Perak. I have been teaching in Perak Matriculation since 2006 till now.
Something to share....
Feel Free To Say Thousand Words
I'm happily married with three children. i live in Gopeng, Perak. I have been teaching in Perak Matriculation since 2006 till now.
Something to share....
Di sini lahirnya sebuah cinta
Yang murni abadi sejati
Di sini tersemai cita cita
Bercambah menjadi warisan
Yang murni abadi sejati
Di sini tersemai cita cita
Bercambah menjadi warisan
[Chorus]
Andai ku terbuang tak diterima
Andai aku disingkirkan
Ke mana harusku bawakan
Ke mana harusku semaikan cinta ini
Andai ku terbuang tak diterima
Andai aku disingkirkan
Ke mana harusku bawakan
Ke mana harusku semaikan cinta ini
Betapa
Di bumi ini ku melangkah
Ke utara selatan timur dan barat
Ku jejaki
Di bumi ini ku melangkah
Ke utara selatan timur dan barat
Ku jejaki
Aku
Bukanlah seorang perwira
Gagah menghunus senjata
Namun hati rela berjuang
Walau dengan cara sendiri
Demi cinta ini
Bukanlah seorang perwira
Gagah menghunus senjata
Namun hati rela berjuang
Walau dengan cara sendiri
Demi cinta ini
[Ulang chorus]
Ku ingin kotakan seribu janji
Sepanjang kedewasaan ini
Ku ingin sampaikan pesanan
Akulah penyambung warisan
Sepanjang kedewasaan ini
Ku ingin sampaikan pesanan
Akulah penyambung warisan
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