Science Experiments for Homeschoolers
Young children are less and less contact with science at school so we can help parents develop their scientific spirit. The following article describes a simple experiment for parents who want their children to participate in science. I use this experience to my students of class eight in the natural sciences, but have been adapted for use by young children. I even tried it on my own 5 – and 3-year survivors and loved it.
Simple science experiments for foster scientific thinking
Kids today have little contact with science in primary schools. And science, I mean the question, testing, analysis and review of the principles of scientific method. Therefore, it is the parents who give us options if we want our children to develop a scientific spirit. As children rarely said that learning experience just to provide simple perfect opportunities for the introduction and strengthening of scientific thought.
How are the experiments a large impact on its effectiveness. Experiences that begin with questions like “What do you think will happen?” Or end with “scaffolding Why do differently?” Children get their heads in the right place. Even before children can “play” experience with the materials before the start of an experiment to investigate how materials work together and allows self-experimentation.
Not all parents think only of exciting experiences, however. There are many great resources out there, but sometimes we need something fast to worry about. Check the simple experiment below to begin. You can measure your “students” to pay and combine independently to maximize their learning and their sense of competition. You will be pleased to know that cleanliness means very little.
Chemical reaction engineering in a bag
Objective
To see what happens when you mix vinegar and baking soda in a sealed bag
Material
Boxes of the movie (or something similar)
Ziplock bags that seal (quart size) closed
¼ cup vinegar
1 teaspoon baking powder
Thermometer
Stages
First put a teaspoon of baking soda into the frame of the movie.
Second Pour ¼ cup of vinegar into the plastic bag.
Third Search and record the temperature of the vinegar (keep the thermometer in at least one minute).
Stand-quarter cup of baking soda in the bag, but still not confused.
Fifth closed plastic bag and almost eliminate the air, then the bag.
Sixth predict what will happen in the bag and the temperature when you mix baking soda in vinegar.
Mix all seventh baking soda into the vinegar, turn the bag.
Note 8 and the comment!
Ninth Open the bag and measure the temperature of the liquid.
10th Ask what you can do differently, and repeat the experiment.
Thinking of the system 11 more questions like “How baking soda or vinegar more or less of temperature or as quickly fill the bag?” And “how the vinegar temperature affect things?”
The science behind the experience
The chemical reaction between vinegar and baking soda produces carbon dioxide, a gas. For more gas to the memory that the coupling of fluids and solids, the bag inflates. The weight of the bag does not change throughout the experiment, because nothing creates a new, original material to make changes only. The low temperature, because the reaction is endothermic, meaning that keeps pulling to react to heat.
Now, to experience the heat (exothermic) is generated instead of extract:
Heat production, steel wool
Material
Steel wool
Vinegar
Styrofoam cup with a lid with a hole for a straw
Thermometer (through hole being beaten at the top)
Stages
First, insert the thermometer close to the glass and cover.
Wait 5 minutes and seconds to record the temperature.
Third Remove the thermometer in the jar.
Fourth Weigh a piece of steel wool.
Fifth enjoy them in vinegar for 1 minute.
Press vinegar sixth steel wool pad. Wrap the steel wool around the bulb of the thermometer.
Seventh Insert the thermometer and steel wool back into the pot and close the lid.
Eighth Wait 5 minutes.
Ninth Predict what will happen to the temperature.
10th Now take a look at the temperature.
11 (Optional) predict what will happen to Earth.
Gently rinse the steel wool 12 (so no rust drops) and dry, then weighed.
The science behind the experience
The vinegar removes any protective coating from steel wool, so the iron in the steel from corrosion. Rust is also accelerated by the acid of vinegar. Steel wool was significantly oxidized. Mold is a slow combination of iron with oxygen. If this happens, heat energy is released. The heat released by the oxidation of iron, mercury in the thermometer to expand and grow, which is an exothermic reaction.
The extra oxygen in the oxidation should also lead to the filling yarn to weigh more (rust, four iron atoms that bind three molecules of oxygen, two oxygen atoms) and some water molecules.
Why reactions occur in the first place?
All chemical reactions use energy to break chemical bonds and release energy in the form new relationships. Total responses tend disorder, which is described by a scientific principle that the second law of thermodynamics.
If an exothermic reaction (heat release) occurs, so the heat released by the reaction of disorders affected. This overcomes a major order generated by the reaction.
The opposite is true in an endothermic (heat removal) reaction. You must remove the heat causes the more orderly environment, which offset by a disturbance in the system itself. For example, the gases are very disorganized, which explains the initial reaction.
Completion
The science that goes about his knowledge of the world around us. It’s a matter of good questions and how to respond. By providing opportunities like this and know how the questions your kids are thinking, I ask, will help make the development of the scientific spirit, able to solve all the problems before them.