Tareas

Escuela Secundaria N° 18
‘’Cincuentenario de la Expropiación Petrolera’’


Subject: English
TOPIC: Set instructions album.
Name:
Teacher Name: Gloria A. Rdz Sanchez
Grade: Third
Group: ‘’’’
November 10, 2012.
Index
Mixing oil and water ………………… 3 – 4

Egg in the bottle ……………………. 5 –6

Baking Soda & VinegarVolcano …… 7-8

Sugar Crystallization and Evaporation…9-10

Advanced Chemistry Experiment…… 11-12

Chlorine explosion ………………….….13-14

Reactions of carbonyl compounds …….15-16

Sugar - Water Density Columns ……….17-18

Conclusion of the experiments ……….. 19 - 20
1.- Mixing Oil and Water
Some things just don't get along well with each other. Take oil and water as an example, youcan mix them together and shake as hard as you like but they'll never become friends.....or will they? Take this fun experiment a step further and find out how bringing oil and water together can help you do your dishes.

Materials:
• Small soft drink bottle
• Water
• Food colouring
• 2 tablespoons of cooking oil
• Dish washing liquid or detergent

Instructions:
1. Add a few drops offood colouring to the water.
2. Pour about 2 tablespoons of the coloured water along with the 2 tablespoons of cooking oil into the small soft drink bottle.
3. Screw the lid on tight and shake the bottle as hard as you can.
4. Put the bottle back down and have a look, it may have seemed as though the liquids were mixing together but the oil will float back to the top.
What's happening?While water often mixes with other liquids to form solutions, oil and water does not. Water molecules are strongly attracted to each other, this is the same for oil, because they are more attracted to their own molecules they just don't mix together. They separate and the oil floats above the water because it has a lower density.

2.- Egg in the bottle

-Materials
•Hard boiled eggwithout shell (large/ large eggs are best)
Glass bottle with an opening slightly smaller than the egg
Matches
Small piece of paper.
Procedure:
•Put the small piece of paper into the bottle
Light a match and drop into the bottle along with the paper
immediately place the egg on top of the bottle, so that the opening is completely closed.

•What's Going On?
•The egg prevents outside air(high pressure) from getting into the bottle while the flame causes the air inside the bottle (low pressure) to contract causing a small vacuum.
•As the outer air pushes its way into the bottle and the vacuum is created in the bottle, the egg falls in.
•Watch the egg drop into the bottle!

To get the egg out of the bottle, hold the bottle upside down so that the egg blocks the bottleopening. Blow as hard as you can into the bottle. The air pressure in the bottle forces the egg out and into your hand.

3.- Baking Soda & Vinegar Volcano

Use baking soda and vinegar to create an awesome chemical reaction! Watch as it rapidly fizzes over the container and make sure you've got some towels ready to clean up.
What you'll need:

• Baking Soda (make sure it's not bakingpowder)
• Vinegar
• A container to hold everything and avoid a big mess!
• Paper towels or a cloth (just in case)

Instructions:
1. Place some of the baking soda into your container.
2. Pour in some of the vinegar
3. Watch as the reaction takes place!
What's happening?
The baking soda (sodium bicarbonate) is a base while the vinegar (acetic acid) is an acid. When they react togetherthey form carbonic acid which is very unstable, it instantly breaks apart into water and carbon dioxide, which creates all the fizzing as it escapes the solution.

4.- Sugar Crystallization and Evaporation

•Use evaporation to make colorful sugar crystals.
•Evaporation can be described as the process in which a liquid is converted to a vapour.

Materials:
2 spoons sugar
10 spoons...