Pepi Jaramillo Romero
Dpto. Física y Química
IES Vegas Bajas
How does it work?
Foam is awesome! The foam you made is special because each tiny
foam bubble is filled with oxygen. The y...
You will need
A clean 16 ounce plastic soda bottle
1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6%
solution,...
What to do
Pour the water into the bottle.
Use a measuring cup or funnel to slowly pour the vegetable oil
into the bottle ...
MAKE IT AN EXPERIMENT
The project above is a DEMONSTRATION. To make it a true
experiment, you can try to answer these ques...
HOW TO MAKE A SLIME
How does it work?
Now for the SCIENCE part….
This POLYMER is unique
because it has qualities of
both a...
HOW TO MAKE A SLIME
You will need
Elmer’s glue
2 disposable cups
Food coloring
Borax Powder
A plastic spoon (for stirring)...
HOW TO MAKE A SLIME
MAKE IT AN EXPERIMENT
We made a DEMONSTRATION. To make it a true experiment, you can try
to answer the...
How does it work?
The baking soda and the vinegar create an ACID-BASE
reaction and the two chemicals work together to
crea...
BUILD A FIZZ INFLATOR
You will need
One small empty plastic soda or water bottle
1/2 cup of vinegar
Small balloon
Baking s...
BUILD A FIZZ INFLATOR
MAKE IT AN EXPERIMENT
We made a DEMONSTRATION. To make it a true experiment, you can try to
answer t...
How does it work?
When expanded polystyrene is placed in propanone
(acetone), the polystyrene apparently disappears, and
t...
DISAPPEARING PLASTIC!
You will need
Propanone (acetone), (HIGHLY FLAMMABLE, IRRITANT), 50 cm3
Expanded polystyrene pieces,...
DISAPPEARING PLASTIC!
What to do
Hold an expanded polystyrene drinking cup over the 1 dm3 beaker and slowly pour
about 50 ...
OOBLECK – THE CORNSTARCH
AND WATER EXPERIMENT
How does it work?
Our cornstarch goo (sometimes referred to as “oobleck” fro...
OOBLECK – THE CORNSTARCH
AND WATER EXPERIMENT
You will need:
Cornstarch (a 16 oz. box is good for every 2-3 participants –...
Pepi Jaramillo Romero
Dpto. Física y Química
IES Vegas Bajas
How does it work?
To begin, the oil stays above the water bec...
Pepi Jaramillo Romero
Dpto. Física y Química
IES Vegas Bajas
BLOBS IN A BOTTLE
You will need
A clean 1 litre clear soda bo...
Pepi Jaramillo Romero
Dpto. Física y Química
IES Vegas Bajas
BLOBS IN A BOTTLE
MAKE IT AN EXPERIMENT
We made a DEMONSTRATI...
BIBLIOGRAPHY
https://sciencebob.com
You get home, tired after a long day’s work and
ready for a relaxing night alone. You ...
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Happy Chemical Halloween Vegas Bajas Montijo

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Experimentos de química para celebrar Halloween

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Happy Chemical Halloween Vegas Bajas Montijo

  1. 1. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  2. 2. How does it work? Foam is awesome! The foam you made is special because each tiny foam bubble is filled with oxygen. The yeast acted as a catalyst (a helper) to remove the oxygen from the hydrogen peroxide. Since it did this very fast, it created lots and lots of bubbles. Did you notice the bottle got warm. Your experiment created a reaction called an Exothermic Reaction – that means it not only created foam, it created heat! The foam produced is just water, soap, and oxygen so you can clean it up with a sponge and pour any extra liquid left in the bottle down the drain. This experiment is sometimes called “Elephant’s Toothpaste” because it looks like toothpaste coming out of a tube, but don’t get the foam in your mouth! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas FANTASTIC FOAMY FOUNTAIN
  3. 3. You will need A clean 16 ounce plastic soda bottle 1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution, ask an adult to get this from a beauty supply store or hair salon) 1 Tablespoon (one packet) of dry yeast 3 Tablespoons of warm water Liquid dish washing soap Food coloring Small cup • Safety goggles NOTE: The foam will overflow from the bottle, so be sure to do this experiment on a washable surface, or place the bottle on a tray. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas FANTASTIC FOAMY FOUNTAIN
  4. 4. What to do Pour the water into the bottle. Use a measuring cup or funnel to slowly pour the vegetable oil into the bottle until it’s almost full. You may have to wait a few minutes for the oil and water separate. Add 10 drops of food colouring to the bottle (we like red, but any colour will look great.) The drops will pass through the oil and then mix with the water below. Break a fizzing tablet in half and drop the half tablet into the bottle. Watch it sink to the bottom and let the blobby greatness begin! To keep the effect going, just add another tablet piece. For a true lava lamp effect, shine a flashlight through the bottom of the bottle. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas FANTASTIC FOAMY FOUNTAIN
  5. 5. MAKE IT AN EXPERIMENT The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions: Does the amount of yeast change the amount of foam produced? Does the experiment work as well if you add the dry yeast without mixing it with water? Does the size of the bottle affect the amount of foam produced? Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas FANTASTIC FOAMY FOUNTAIN VIDEO FANTASTIC FOAMY FOUNTAIN
  6. 6. HOW TO MAKE A SLIME How does it work? Now for the SCIENCE part…. This POLYMER is unique because it has qualities of both a solid and a liquid. It can take the shape of its containers like a liquid does, yet you can hold it in your hand and pick it up like a solid. As you might know, solid molecules are tight together, liquid molecules spread out and break apart (drops) POLYMER molecules CHAIN themselves together (they can stretch and bend like chains) and that makes them special. Jell-O, rubber bands, plastic soda bottles, sneaker soles, even gum are all forms of polymers. The polymer you made should be kept in a sealed plastic bag when you aren’t playing with it. Also, be sure to keep it away from young kids or pets who might think it’s food. Have fun! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  7. 7. HOW TO MAKE A SLIME You will need Elmer’s glue 2 disposable cups Food coloring Borax Powder A plastic spoon (for stirring) A tablespoon (for measuring) What to do Fill one small cup with water and add a spoonful of the Borax powder and stir it up. Then set it aside. Fill the other small cup with about 1 inch (2.5 cm) of the glue. Add three tablespoons (20 ml) of water to the glue and stir. Add a few drops of the food coloring and stir it up until mixed. Now the fun part…Add one tablespoons of the Borax solution you made earlier and stir well. Watch the slime form! After the slime forms let it sit for about 30 seconds and then pull it off the spoon and play with it! Tip: Keep your slime in a tightly closed plastic bag when you are not playing with it, and keep it away from carpet and your little sister’s hair. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  8. 8. HOW TO MAKE A SLIME MAKE IT AN EXPERIMENT We made a DEMONSTRATION. To make it a true experiment, you can try to answer these questions: How can you make the polymer stretch the farthest? Does the amount of Borax added change the slime? What method of storage will make the polymer last the longest? What brand of glue makes the stretchiest polymer? Does the amount of water added to the glue affect the gooeyness of the slime? VIDEO HOW TO MAKE A SLIME Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  9. 9. How does it work? The baking soda and the vinegar create an ACID-BASE reaction and the two chemicals work together to create a gas, (carbon dioxide) Gasses need a lot of room to spread out and the carbon dioxide starts to fill the bottle, and then moves into the balloon to inflate it. BUILD A FIZZ INFLATOR Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  10. 10. BUILD A FIZZ INFLATOR You will need One small empty plastic soda or water bottle 1/2 cup of vinegar Small balloon Baking soda Funnel or piece of paper What to do Carefully pour the vinegar into the bottle. This is the tricky part: Loosen up the balloon by stretching it a few times and then use the funnel to fill it a bit more than half way with baking soda. If you don’t have a funnel you can make one using the paper and some tape. Now carefully put the neck of the balloon all the way over the neck of the bottle without letting any baking soda into the bottle. Ready? Lift the balloon up so that the baking soda falls from the balloon into the bottle and mixes with the vinegar. Watch the fizz-inflator at work! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  11. 11. BUILD A FIZZ INFLATOR MAKE IT AN EXPERIMENT We made a DEMONSTRATION. To make it a true experiment, you can try to answer these questions: Does the size of the bottle affect how much the balloon fills? Can the amount the balloon fills-up be controlled by the amount of vinegar or baking soda? VIDEO BUILD A FIZZ INFLATOR Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  12. 12. How does it work? When expanded polystyrene is placed in propanone (acetone), the polystyrene apparently disappears, and the gas bubbles within the material create a fizzing effect as they are released. A small volume of propanone can absorb an impressive volume of expanded polystyrene. DISAPPEARING PLASTIC! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  13. 13. DISAPPEARING PLASTIC! You will need Propanone (acetone), (HIGHLY FLAMMABLE, IRRITANT), 50 cm3 Expanded polystyrene pieces, large quantity Eye protection Supply of paper towels, newspaper or similar Beaker, 1 dm3 Large transparent container Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  14. 14. DISAPPEARING PLASTIC! What to do Hold an expanded polystyrene drinking cup over the 1 dm3 beaker and slowly pour about 50 cm3 of propanone into it. The bottom will fall out of the cup and the propanone will pour straight through into the beaker. Alternatively, simply pour about 50 cm3 of propanone directly into the 1 dm3 beaker. Add about 5 dm3 of expanded polystyrene pieces to the large transparent container. Add the expanded polystyrene pieces a handful at a time to the propanone. A suitable scoop may be useful for this. The polystyrene pieces will shrink and fizz, eventually forming a layer of sticky gel below the propanone. VIDEO DISAPPEARING PLASTIC! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  15. 15. OOBLECK – THE CORNSTARCH AND WATER EXPERIMENT How does it work? Our cornstarch goo (sometimes referred to as “oobleck” from the Dr. Suess book) is what scientists call a “Non-Newtonian” liquid. Basically, Sir Isaac Newton stated individual liquids flow at consistent, predictable rates. As you likely discovered, cornstarch goo does NOT follow those rules – it can act almost like a solid, and them flow like a liquid. Technically speaking, the goo is a SUSPENSION, meaning that the grains of starch are not dissolved, they are just suspended and spread out in the water. If you let the goo sit for an while, the cornstarch would settle to the bottom of the bowl. So why does this concoction act the way it does? Most of it has to do with pressure. The size, shape, and makeup of the cornstarch grains causes the cornstarch to “lock-up” and hold its shape when pressure is applied to it. People have filled small pools with oobleck and they are able to walk across the surface of it (as long as they move quickly.) As soon as they stop walking, they begin to sink. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas
  16. 16. OOBLECK – THE CORNSTARCH AND WATER EXPERIMENT You will need: Cornstarch (a 16 oz. box is good for every 2-3 participants – but more is always better) Water Food coloring (we always say it’s optional, but it does make it more fun – don’t use too much or you could end up with colored hands…and clothes…and curtains) A large bowl I hope you get to try this out. VIDEO I OOBLECK-THE CORNDTARCH AND WATER EXPERIMENT Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas VIDEO II OOBLECK-THE CORNDTARCH AND WATER EXPERIMENT
  17. 17. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas How does it work? To begin, the oil stays above the water because the oil is less dense than water. The oil and water do not mix because of something called “intermolecular polarity.” That term is fun to bring up in dinner conversation. Molecular polarity basically means that water molecules are attracted to other water molecules. They get along fine, and can loosely bond together (drops.) This is similar to magnets that are attracted to each other. Oil molecules are attracted to other oil molecules, they get along fine as well. But the structures of the two molecules do not allow them to bond together. When you added the tablet piece, it sank to the bottom and started dissolving and creating a gas. As the gas bubbles rose, they took some of the colored water with them. When the blob of water reached the top, the gas escaped and down went the water. Cool, huh? By the way, you can store your “Blobs In A Bottle” with the cap on, and then anytime you want to bring it back to life, just add another tablet piece. BLOBS IN A BOTTLE
  18. 18. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas BLOBS IN A BOTTLE You will need A clean 1 litre clear soda bottle 3/4 cup of water Vegetable Oil Fizzing tablets Food colouring What to do Pour the water into the bottle. Use a measuring cup or funnel to slowly pour the vegetable oil into the bottle until it’s almost full. You may have to wait a few minutes for the oil and water separate. Add 10 drops of food colouring to the bottle (we like red, but any colour will look great.) The drops will pass through the oil and then mix with the water below. Break a fizzing tablet in half and drop the half tablet into the bottle. Watch it sink to the bottom and let the blobby greatness begin! To keep the effect going, just add another tablet piece. For a true lava lamp effect, shine a flashlight through the bottom of the bottle.
  19. 19. Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas BLOBS IN A BOTTLE MAKE IT AN EXPERIMENT We made a DEMONSTRATION. To make it a true experiment, you can try to answer these questions: Does the temperature of the water affect the reaction? Does the size of the bottle affect how many blobs are produced? Does the effect still work if the cap is put on the bottle? Does the size of the tablet pieces affect the number of blobs created? VIDEO BLOBS IN A BOTTLE
  20. 20. BIBLIOGRAPHY https://sciencebob.com You get home, tired after a long day’s work and ready for a relaxing night alone. You reach for the light switch, but my hand is already there. Good night! Pepi Jaramillo Romero Dpto. Física y Química IES Vegas Bajas PICTURES

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