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Science doesn't have to be
complicated, expensive or use specialized laboratory equipment.
There are great science projects that can be performed using common
household items.
Whether you are a parent or a student trying
to find an idea for a science project, a teacher looking for ideas
for the classroom, or a science enthusiast who enjoys the delight of
experimentation, you'll find what you're looking for in this book.
Matter can exist in three possible states: solid, liquid and gas. A solid is rigid and retains its shape. A liquid is fluid, has a definite volume, and will take the shape of its container. A gas fills a space, so its volume will be the same as the volume of its container. Often the state of matter is determined by temperature. For example, water is a liquid, that freezes to become a solid (ice), or can be heated to become a gas ( steam).
A colloid is a mixture where the particles are too large to dissolve but small
enough to remain suspended in the liquid. A polymer is a long chain of
molecules that look something like strands of cooked spaghetti. With a
polymer colloid, the suspended particles are long polymer strands.
White craft glue is made up of long polymer strands that are not
connected together. Borax is solid and when wet, connects the
glue polymers to form putty which can be described as a colloid polymer.
Recipe for Putty
(sometimes called Flubber or Goop) - very like Silly Putty
1. What state is often called the forth state of matter?
At very high temperatures, matter becomes plasma.
2. What are some examples of colloids in the world around you?
fog, mayonnaise, jello and meringue
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