Question

alguien me podría ayudar con 5 experimentos cortos en inglés

Answer 1

1-materials:

one balloon
1 plastic bottle ( 600 ml . Approx. )
½ cup white vinegar
1 funnel
1 tablespoon
1 elastic band
Sodium Bicarbonate
How to:ExperimentsVerter white vinegar in the plastic bottle . Using the funnel , add two tablespoons of baking soda ( can be easily obtained at any pharmacy ) inside the balloon . Place the balloon in themouth of the bottle , taking great care that the baking soda does not fall within the same ( see the video to understand better) and secure the opening with a rubber band . Once ready , now to dump bakingsoda inside the balloon content . Observe what happens .

What happens ?

As you can see the balloon inflate itself seems , but in reality it is a chemical phenomenon . What happens in this..


2- Materials: 
Sodium bicarbonate
1 Napkin
1 cork 
1 straw
1 small plastic bottle
Sewing thread
vinegar
1 candle
matches

Instructions:
Place 4 tablespoons of Sodium Bicarbonate powder on the napkin, tie up the corners using the sewing thread, leaving a thread end about 15cm.Place 5 tablespoons of vinegar in the plastic bottle. Enter partially the baking napkin and tie the 15cm end of the thread out of the bottle so that the napkin bag hangs.Pierce the center of the cork and insert the straw.Place the cork with the straw covering the bottle.Light a candleShake the bottle holding the straw covered with your index finger.remove your finger and project the gas bottle on the already lighted candle,

What happen? 

 The reaction of vinegar and sodium powder (base and acid) produces carbon formadioxido through the straw  removing the oxygen since it’s is heavier than the air it extinguishes the flame