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مشروع الانجليزية ص93 (التجربة العلمية)

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???? مشروع الانجليزية ص93 (التجربة العلمية)

مُساهمة من طرف زهرة الاسلام في 2013-03-19, 16:21

Laughing
HOW TO MAKE VOLCANO EXPERMENT

The baking soda and vinegar volcano is the kitchen equivalent of a volcano. Obviously it's not a real volcano. It's cool all the same! The baking soda volcano is also non-toxic, which adds to its appeal.
Difficulty: Average
Time Required: 30 minutes
Here's How:




1. First make the 'cone' of the baking soda volcano. Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water. The resulting mixture should be smooth and firm (more water may be added if needed).
2. Stand the soda bottle in the baking pan and mold the dough around it into a volcano shape. Don't cover the hole or drop dough into it.
3. Fill the bottle most of the way full with warm water and a bit of red food color (can be done before sculpting if you don't take so long that the water gets cold).
4. Add 6 drops of detergent to the bottle contents. The detergent helps trap the bubbles produced by the reaction so you get better lava.
5. Add 2 tablespoons baking soda to the liquid.
6. Slowly pour vinegar into the bottle. Watch out - eruption time!
Tips:
1. The cool red lava is the result of a chemical reaction between the baking soda and vinegar.
2. In this reaction, carbon dioxide gas is produced, which is also present in real volcanoes.
3. As the carbon dioxide gas is produced, pressure builds up inside the plastic bottle, until the gas bubbles (thanks to the detergent) out of the 'volcano'.
4. Adding a bit of food coloring will result in red-orange lava! Orange seems to work the best. Add some red, yellow, and even purple, for a bright display.
5. If you need more detailed instructions or information about the chemical reactions involved in the volcano
What You Need
• 6 cups flour
• 2 cups salt
4 tablespoons cooking oil

• warm water
• plastic soda bottle
• dishwashing detergent
• food coloring
• vinegar
• baking dish or other pan
• 2 T baking soda
How does it work
A VOLCANO is produced over thousands of years as heat a pressure build up. That aspect of a volcano is very difficult to recreate in a home experiment. However this volcano will give you an idea of what it might look like when a volcano erupts flowing lava. This is a classic experiment in which a CHEMICAL reaction can create the appearance of a PHYSICAL volcano eruption. You should look at pictures of volcanoes to be familiar with the different types. (A SHIELD volcano, for example is the most common kind of volcano, and yet few people know about them) The reaction will bubble up and flow down the side like a real volcano (only much faster!) Look for videos of volcanoes erupting and be sure that you understand how heat and pressure work to really make volcanoes erupt.
هده التجربة نفدناها في القسم اتمنى ان تستفيدو منها وهي ناجحة
ادعولي.......................... ward
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زهرة الاسلام
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تاريخ التسجيل : 04/04/2012

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???? رد: مشروع الانجليزية ص93 (التجربة العلمية)

مُساهمة من طرف Saàdia.farah201 في 2014-01-07, 00:14

شكرا على المساعدة  flower alien 
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Saàdia.farah201
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???? رد: مشروع الانجليزية ص93 (التجربة العلمية)

مُساهمة من طرف مر الزمان في 2014-01-26, 13:36

Laughing Laughing Razz
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تاريخ التسجيل : 26/01/2014

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