| Q1: |
IMPORHTANCE OF CHEMISTRY IN MAKING RUSTIC CORRUGATED CANDLES |
CHRISTINE |
6/2/2011 |
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| Q2: |
why candles are turned off when we run with them ? |
ahmed salem |
18/10/2010 |
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| Q3: |
But, isn't it true that candles DONT ACTUALLY exist?? |
Sir Graham Todlington (Pigeon Shooter) |
28/4/2009 |
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| Q4: |
Why isn't a candle amde out of cheese ? |
RaaaaWWWWWWRrrrrrrrRR |
6/2/2009 |
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| Q5: |
who to purchage you product |
murali krishna |
21/11/2008 |
| Ans: |
You can pay through credit card, demand draft , PayPal, Money Order for the products |
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| Q6: |
This is an outstanding cotribution. Kindly accept my heartfelt congratulations! |
Prof. Dr. Haroon Rashid |
30/7/2008 |
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Thanks |
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| Q7: |
Normally, when we cut an onion, our eyes water & sting a lot. But if a burning candle is kept nearby, there are no tears at all. Why is this so? |
lyra |
13/6/2008 |
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Onions release fumes of sulphuric acid gas that interacts with anything moist including the eyes to irritate them, so freezing onions or cutting them in a pan filled with water does away with the emission also having a fire, such as a candle, will help as the heat and flames will draw in the onion gas, burn it, and then send it up with the rest of the flame exhausts. In the heat, the chemical reaction changes it such that it no longer irritates the eyes. |
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| Q8: |
HOW DO A ELECTRIC FUEL PUMP WORK ON A CAR |
zex |
2/4/2008 |
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| Q9: |
all info about trick candles (for a chemestry project... ASAP!!) |
Victoria Mayer |
5/3/2008 |
| Ans: |
What is the trick in the “trick candle”? When a person blows it out, it simply re-lights itself. In a normal candle, there is a burning ember (red portion) in the wick that causes a ribbon of paraffin smoke to rise from the wick. That ember is hot enough to vaporize paraffin but it is not hot enough to ignite the paraffin vapor. It needs something that burns producing a higher temperature. We add magnesium to wick; it burns rapidly at an ignition temperature of 800 deg F (430 deg C), the tiny sparks of magnesium re-ignite paraffin vapor, to light up the candle. The magnesium in the rest of the wick doesn't burn because the liquid paraffin isolates it from oxygen and keeps it cool. This is similar to a dynamite fuse except the quantity of magnesium is much less in candle. |
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| Q10: |
who invented the lightbulb? |
geo |
9/4/2006 |
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Invention of light bulb has a history prior to Edison’s “development” of electric bulb in 1879. In 1854 - Henricg Globel, invented the first true light bulb using a carbonized bamboo filament placed inside a glass bulb, the first electric arc light was invented in 1809 by Humphry Davy, he connected two wires to a battery and attached a charcoal strip between them. The charged carbon glowed on passing the current. In 1820 Warren De la Rue put a platinum coil in an evacuated tube and made it glow. |
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| Q11: |
What is a star? |
pushpa |
7/4/2006 |
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Stars are massive bodies of plasma (ionic gas - hydrogen whose nucleus has separated from its electron) in space, producing their own energy through nuclear fusion. They are in hydrostatic equilibrium (contained in by gravity) so do not explode. Look at our “nuclear fusion in Sun” animation for more info. Stars allow us to look into the past, light coming from nearest Star “Sun” takes 8 minutes and from Alpha Centauri takes 4.3 years and tells us what they looked like 8 minutes or 4.3 years ago. |
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| Q12: |
Why can't a candle survive without air? |
sarah |
7/4/2006 |
| Ans: |
A candle can, its flame can't ;) to burn a candle or for that matter any combustible material oxygen is needed ( for oxidation of carbon), in absence of air a candle cannot produce a flame. |
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