This week, fellow scientists, your blog assignment is find a super cool chemical reaction, learn a little bit about it, and share it with all of us.
Have fun! Be creative! Find weird reactions!
Monday, January 18, 2010
Weekly Report #6 - A Cool Chemical Reaction - Period 5
This week, fellow scientists, your blog assignment is find a super cool chemical reaction, learn a little bit about it, and share it with all of us.
Have fun! Be creative! Find weird reactions!
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green penny
The copper in the penny reacts with the oxygen in the air to form the green colored copper oxide they use vineger to make it go faster
materials:• Saucer
• Vinegar
• A Penny
• Kitchen/Paper Towel
steps:fold a paper towel a few times
put the paper towel on a plate
put the penny on the paper towel then watch it for a few days
i found this information on kitchen chemical reactions
Why does gunpowder explode?
Technically it doesn't explode...it burns very rapidly. When burning, the gases from it try to expand but when it's in such a small space, it builds up pressure which launches the bullet out. That's why if you light a pile of gunpowder on the ground and out in the open, it will just burn. Open burning allows the gases to expand easily and make very little pressure.
Why do nails or other metals rust?
In this reaction, metal combines with oxygen to form iron oxide (rust). Corrosion (dissolving metal) happens when metals lose electrons when they react with water and oxygen resulting in deterioration (weakening) of the metal’s properties.
I researched about hair dyes, and this part that I read was about permanent hair dyes.
The dye opens up the outer layer (cuticle layer), then it lets the dye "penetrate the natural pigment hair molecules" (I didn't know another way to write this).
A lot of hair dyes have two components (parts) to them.
1-hydrogen dioxide in water
2-ammonia (nitrogen and hydrogen) solution of dye components
It takes away your natural color, and replaces it with the dye.
When you drop mentos into a diet coke bottle, why does the coke explode?
Many people think that the diet coke is exploding, but that is wrong. Really, it is just the diet coke foaming at a very quick rate. In this reaction, the carbon dioxide gas in the coke mix with the gelatin and gum arabic in the mento. Each mento has tons of tiny pits on the service called nucleation sites. They allow the carbon dioxide bubbles to form in them. When all this happens, the carbon dioxide gas is released, and the liquid is pushed up, which makes the reaction happen.
I found this on:http://www.stevespanglerscience.com/experiment/00000109
Hydrogen Bubbles
Materials you will need:
• An Iron Nail
• Sandpaper
• Test Tube/Clear Plastic Cup/Clear Glass
• Vinegar
Steps:
1.) Pour about two inches of vinegar into your test tube, clear plastic cup, or clear glass.
2.) Take the nail and sand down the tip end of the nail with the sandpaper.
3.) Place the nail in the vinegar for a few minutes.
Watch and in a few minutes you should see bubbles appear in the test tube around the iron nail. These bubbles are hydrogen bubbles.
Potassium Chlorate and Gummy Bear
Materials you will need:
1) a gummy bear
2)potassium chlorate
3)a testing tube of some kind.
4)some kind of metal fork or sharp object.
Steps.:
1) spray the bottom of the tube with pottasim chlorate
2)put the gummy worm into the tube
3) tap the gummy worm with the metel abject to make sure that it is in there.
4)then push it into the pottasim chlorate and see what happens
You push the gummy bear in and you will se that it has a fire work reaction. That is the reaction of the gummy bear and the pottasim chlorate
SUPER COOLED WATER!!!
Materials...
Lots of bottled water
Bowl
STEPS!!!
1) Make that the tempurature outside is in the mid 20's
2) Put the bottled water outside overnight.
3) You will see the next day that some bottles are frozen and some are not. Take a bottle of unfrozen water out.
4) The water is now undisturbed. You can disturb it by just flicking the bottle. Once the first crystal is made, it starts to freeze the whole bottle. It usually takes about 30 minutes to freeze. Now the bottle is a mixture of ice and water slush.
5) Now start pouring water into the bowl and it will start to freeze solid.
I hope you liked it! Try it at home!!!
How does ice melt?
Materials needed:
Ice
Warm Weather
In order for ice to be ice, it needs to be 320 degrees F. then, when the ice is exposed to the heat, the water molecules (H2O), start to jiggle and break apart and "flow", therefor turning frozen H2O, into liquid H2O.
a correction to what I posted earlier, I said 320 degrees F. I meant 32 degrees F.
What is the chemical reaction for why hand warmers create heat?
The iron in the pouch, when exposed to oxygen, oxidizes and therefore produces heat. When iron oxidizes it produces iron oxide, or rust.
The salt acts as a catalyst. The carbon helps disperse the heat. And thats why they need no use of batteries or electricity.
This reaction is known as an 'oscillating' (to like swing or move or vibrate.) chemical reaction.The clear chemical slowly turns a tan color, then changing to a very dark blue! Then it fades to clear and the process repeats, a lot!!! I saw it change ten times!!!!! Then last it ends in a dark blue liquid. They said it would smell like iodine! The reason this happens is because the first reaction caused some chemicals to mix in with the liquid, then theres aa spark. Then it keeps on doing it until it's tierd/exhausted.
why does iron rust?
Iron will rust when it comes into contact with oxygen and water. It forms (generally) when iron reacts with oxygen of the air around it, with moisture, which will form a brown thing was iron oxide. It is a slow chemical reaction (unlike other ones) which takes a long period of time. Rusting is a chemical procedure that take place in some metal that are uncovered to the environment. However not all metals rust but it is common with metal and iron.
How does popcorn pop?
The starch grains in a popcorn kernel are embedded in a very strong protein shell. When the kernel is heated to 150 degrees Fahrenheit the water in the kernel evaporates. The water softens the starch, breaking the shell. The shell bursts under tremendous pressure, making the pop sound.
Why Do Glow Sticks Glow/Light Up?
Glow sticks light up because of a chemical reaction. This chemical reaction occurs when a glow stick is bent. Inside a plastic tube is a chemical. Inside the plastic tube with the chemical is a glass tube with a different chemical. When the glow stick is bent, the glass tube breaks and releases the second mentioned chemical into the first mentioned chemical, causing the glowstick to light up.
Glowsticks use energy from a chemical reaction to make light. mOst glow sticks contain the chemicals hydrogen peroxide and a phenyl oxalate ester, as well as floresant dye. Basically, when the chemicals mix, the phenyl oxalate ester becomes unstable and begins to decompose. As a result, the electrons in the dye jumps to a higher level, and then fall back down, the even themselves out. This creates energy in the form of light.
The chemical reaction that I found was combustion. Oxygen combines with another compound making up water and carbon dioxide. The reaction is exothermic so they produce heat. Exo means coming out of so the word exothermic means heat coming out of. The release of this heat creates light that can be glowing or a flame. Exothermic reactions are between fuel and oxidant.
C10H8 + 12 O2 ---> 10 CO2 + 4 H2O
I researched the chemical reaction that makes fireworks.
The colors in fireworks are made by heating metal salts, like calcium chloride or sodium nitrate, which emit the colors. The energy that is absorbed by atoms rearranges it's electrons from it's lowest energy state (ground state) to it's highest energy state (called the excited state). The extra energy is emitted as light. The amount of energy emitted is the characteristic of the element, and determines the colors of the light.
Blowing up Balloons with CO2
Materials
• Balloon
• About 40 ml of water
• Soft drink bottle
• Drinking straw
• Juice from a lemon
• 1 teaspoon of baking soda
1. Stretch out the balloon to make it as easy as possible to inflate.
2. Pour the 40 ml of water into the soft drink bottle.
3. Add the teaspoon of baking soda and stir it around with the straw until it has dissolved.
4. Pour the lemon juice in and quickly put the stretched balloon over the mouth of the bottle.
Lemon juice added to the baking soda creates a chemical reaction. The baking soda is a base, while the lemon juice is an acid, when the two combine they create carbon dioxide (CO2). The gas rises up and escapes through the soft drink bottle into the balloon, pushing it outwards and blowing it up. If you don’t have lemon juice, you can substitute with vinegar.
The chemical reaction I found was about why wintergreen lifesavers spark in your mouth in the dark. It turns out it is because in your mouth jumping electrons crash into nitrogen atoms which are in the air. The nitrogen briefly absorbs the energy from the collision and then spits out some energy — in the form of ultraviolet light. The reason we can see the UV light is because of the flavoring, wintergreen, allows it to turn blue so we can see it. I thought this was really cool, I've always wondered why that is.
I found out why when you put ice in a glass it floats.
As water cools (freezes) it actualy becomes less dense. unlike other things that are denser in there solid form. it is becuse of water's hydrogen bonding. ice is 9% less dense than water. meaning it takes up 9% more space than water.
"Knotted Bones"
Materials Needed:
-Goggles
-Long, thin bone from a cooked chicken or turkey
-Tall glass
-Vinegar
-Plastic wrap
1) Put on the goggles. Place the bone into a tall glass filled with vinegar and put plastic wrap over it.
2) Leave the bone in the glass for three days. If it does not work pour out the old vinegar and fill the glass with new vinegar. Leave the bone alone for a few more days. If it does work proceed onto the next step.
3) The bone should be flexible if so tie the bone into a knot and allow to dry.
The vinegar (acetic acid) dissolved the calcium in the bone. Calcium makes bones hard and strong. Without the calcium, the bones become rubbery and flexible.
Do not do this reaction at home.
1)Get a container and fill it with yellow chlorine gas.
2)Put a piece of sodium metal in the gas.
3)Put a drop of water on the sodium metal and the micture will explode.
This happend because sodium can catch on fire very easily added with water it cand explode.
In nuclear physics and nuclear chemistry, nuclear fission (the splitting of the nucleus of an atom into nuclei of a smaller atoms accompanied by energy) is a nuclear reaction in which the nucleus of an atom split into smaller parts. Often producing free neutrons and smaller nuclei, which may eventually produce photons(a quantum of electromagnetic radiation, usually considered as an elementary particle that is its own antiparticle and that has zero rest mass and charge and a spin of one). fission of heavy elements is a exothermic reaction(a chemical brought up by released heat). Which can release lare amounts of energy both as electromagnetic radiation and as a kinetic energy of fragments(heating the bulk material take place).
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