Easy Science Project Using Pencils

admin — Wed, 17 Feb 2010 15:03:45 +0000

Show how you can do electrolysis which is separating the hydrogen from the oxygen in water.

When you put some chemicals together in a reactive way they create electricity. You have seen this before because it is used every time you use a battery. This type of chemical electricity can be used to make things work like flashlights, toy cars, DVD players and more.

Water has oxygen and hydrogen within it. A molecule of water contains an atom of oxygen and 2 atoms of hydrogen. If electricity runs through water between electrodes of a battery you can split the parts of water into two. They are oxygen and hydrogen. When you have done this you did electrolysis.

Create a science project which separates the part of water.

You will need these items:

A nine volt battery 2 pencils Salt A glass tall cup A piece of thin cardboard Electric wire

Take your two pencils and sharpen both ends of each. You will have to remove the eraser and metal end before sharpening.

Punch two holes into the cardboard with the pencils and push them almost half way through the cardboard.

Put warm water into the glass far enough so that the pencil bottoms will be able to be submerged by at least an inch or two. Stir about a teaspoon of salt into the warm water until dissolved.

Using the electric wire attach one piece to the top graphite/lead of one of the pencils and to the positive part of the battery. Now cut another piece of electric wire and attached to the lead of the other pencil and the negative part of the battery.

Set the cardboard on top of the glass with the pencils hanging in the glass at one end and the other end of the pencils extend above the cardboard.

Now sit back and watch the electricity from the battery run through the pencils. You should notice small bubbles at the tip of each pencil submerged in the water. The bubbles you see are hydrogen and chlorine gases

Why would you see chlorine? A secondary reaction occurred. Oxygen does not release in this experiment. The reason for this is that oxygen combines with the salt in the water. Because salt has a chemical makeup of sodium chloride, the chlorine gas from the chlorine in the salt is given off. The bubbles you see are hydrogen and chlorine.

Enjoy the science project with your friends.

By: Lesa Bolt

Easy Elementary Science Projects – Physical Changes Science Projects

admin — Wed, 30 Dec 2009 06:34:21 +0000

Doing easy elementary science projects with the kids can be fun and it does not only have to be done for science fairs. Kids love learning in a fun “Play” way and we can use easy elementary science projects to teach them about the wonders of science without them actually realizing that they are learning. Doing easy elementary science projects with the kids is also a great way for homeschoolers to teach the kids science. I think we must start doing a lot more “little” projects with the kids. Here are a few short fun ones to do with the kids.

Physical changes easy elementary science projects

Physical changes can happen when two substances interact or when energy is applied to one or more of the substances. In this easy elementary science projects we are going to see how substances change and then we are going to reverse the physical changes.

The salt solution physical change experiment

What you need for this science project:

Salt A measuring cup A teaspoon A heatproof glass or container Water

How to do this easy elementary science experiment:

Pour ½ cup of warm water into your glass or container Dissolve 2 teaspoons of the salt into the warm water What happens now? The salt becomes invisible, this is a physical change. Now place the glass in a warm place and leave it for a few days until all the water has evaporated. Observe what has happened. The water evaporated and the salt was left behind in the glass. Once again a physical change took place. The salt is now visible once again.

The rock candy physical change experiment

In this easy elementary science project we are going to do more or less the same with a sugar solution.

What you need for this science experiment:

A small heatproof container such as a beaker A piece of string long enough to hang to the bottom of the beaker ½ Cup of hot water 1 Cup of sugar A pencil

How to do this experiment:

Dissolve the sugar in the water in your beaker Once again observe the physical change Tie the string around your pencil and place the pencil over the top of the beaker so the string dangles in the water. Leave your beaker in a hot dry place for a few days and observe what happens. Sugar crystals start forming on the string, a physical change again. There you have your rock candy!

A salty work of art easy elementary science project

In this experiment we are going to have fun. This experiment can double up as an easy kids craft as you will be making a lovely painting.

In this experiment we are going to show how salt and food coloring dissolves in water and reverts back when the water evaporates. You will be amazed at the beautiful painting you will end up with. This experiment needs a little more preparation, but is well worth the trouble.

What you need for this experiment cum craft:

As many containers as colors you intend to use Warm water As many colors food coloring as you want to use Lots of salt Thick paper Paint brushes

How to do this experiment:

By: Magrietha Du Plessis

Science research » Warm Water

Easy Science Project Using Pencils

Easy Elementary Science Projects – Physical Changes Science Projects