Chemistry: The
study of all substances that make up our world
Atom: The smallest particle
of an element
Molecule: The smallest particle of a compound
Nucleus: The center of an atom
Electrons: Tiny particles orbiting around
the nucleus of an atom
Protons: Tiny particle inside the nucleus
of an atom along with the neutron
Liquid: A state of matter where the bonds
between molecules are only medium strong.Solid: The state of matter where the bonds
of the molecules are the densest and strongest. They move the slowest
of the three states.
Gas: The molecules are freely moving around
very quickly.
Solution: A mixture of a liquid with something
else, like another liquid or a solid
Chemical Reaction: When two elements combine,
the molecules do not match up evenly and the left over molecules
and produce a third thing.
Static Electricity: an atom's search for its missing
electron. The atom witout that electron is called an ION
Current Electricity: Current is electrons in motion
There are 2 kinds of Current electricity; Alternating Current and
Direct Current. Alternating current or AC electricity is the type
of electricity commonly used in homes and businesses throughout the
world. While the flow of electrons through a wire in direct current
(DC) electricity is continuous in one direction, the current in AC
electricity alternates in direction.
Magnetism: a naturally occurring force of attraction.
The magnetic field is composed of electrons in motion. The force
both attracts and repels with equal strength.
Compound: a combination of two or more substances
where each retains molecular integrity.
Catalyst: Something that makes the molecules move
faster and change form faster. Any substance that speeds a chemical
reaction without affecting its outcome.
Elements: The simplest possible chemicals, each
made up of its own particular kind of atom. There are 118 elements
on earth. (As of the time of this study guide. Scientists are constantly
working on this and revising the number)
Books to check out
Palder, Edward. Chemistry Magic, Woodbine House inc. Kensington,
MD 1987.
Hann, Judith. How Science Works, Reader's digest books, London,
1991.
VanCleave, Janice. 201 Awesome, Magical, Bizarre & Incredible
Experiments. John Wiley and Sons, USA. 1994.
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