Hello friends because of the importance of our children's education and based on the fact that education begins at home, I have decided to publish this post, to show them in an easy and fun way that we can educate our children from home.
What are Gases: The word gases corresponds to the plural of the term gas, in as much, by gas it refers to that fluid that tends to expand indefinitely and that is characterized by its small density. In other words, it can be said that gas is the state of aggregation of matter that has no form or proper volume, unlike solids and liquids that do.
Characteristics of gases:
The gases have no fixed form or volume, that is, they adapt to the shape and volume of the container that contains them.
Their atoms and molecules are very separated from each other, there is a lot of space between them. This explains why gases can be compressed so easily.
The particles that make up the gases have a lot of kinetic energy (movement energy). They are always moving randomly in a straight line and crashing, both between them, and against the walls of the container. With the collisions the particles undergo changes of direction but do not lose kinetic energy (the collisions are elastic).
The pressure exerted by the gases against the walls of the container that contains them is due to the impacts of the particles against them.
-The kinetic energy increases with temperature. Then, the higher the temperature the more quickly the gas particles move, which translates into more collisions against the walls of the container (higher pressure).
Yes now!! Let the fun begin, let's go with the Experiment !!
How to lift a glass with a balloon!!
Materials:
Process:
Inflate the balloon.
Fill the glass with hot water, count to 10 and then empty the water in the bowl.
The goal is to heat the glass. Place the balloon over the mouth of the glass. It is important that you hold it tight with your hands to prevent the air contained in the glass from escaping into the atmosphere.
After two minutes you can remove your hands. The balloon will be embedded in the glass. In these conditions you can now raise the glass by holding the balloon.
When you want to take out the balloon you just have to put the glass in a bowl of hot water. It will come out right away.
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What has happened?
First of all we have to know that the air that surrounds us and that fills the glass of our experiment is a gas. However:
Hot water With it we have heated the glass and also the air that was inside. The molecules of the gases that make up the air increase their kinetic energy. As the glass is open they can come out freely. Many escape.
We cover the glass with the balloon. From this moment, we have a closed container. The confined air begins to cool, its molecules lose speed (kinetic energy). The collisions against the walls of the glass and against the balloon are less frequent. The pressure inside the vessel is gradually decreasing. However, the external pressure, the atmospheric pressure, remains constant.
The balloon is embedded in the glass. There comes a time when the air pressure inside the vessel is less than the atmospheric pressure. As a consequence, the external pressure pushes the balloon inward and it is trapped. Pulling the balloon upwards, the glass also rises.
Remove the balloon from the glass. To get it without effort, you just have to increase the pressure inside the glass. How? Increasing the kinetic energy of the air molecules, that is, increasing its temperature with a hot water bath in the bowl.
Children love to do experiments. With them, while having fun, they learnand ask questions about the world around them. Among its many benefits, scientific exploration feeds the child's natural curiosity, fosters his interest in science, stimulates reasoning and logic, improves his ability to solve problems, increases his self-esteem and prepares them to understand more complicated scientific concepts in the future.
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http://lasocia.vornix.blog/2018/07/26/science-at-home-fun-homemade-experiments-for-the-little-ones-lets-learn-about-gases-and-their-behavior