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Alessandro Volta

Discovered first electric cell and later created the battery

Michael Faraday

Discovered that a electric current could be produced by passing a magnet through a copper wire

A generator

Converts motion into electricity

Thomas Edison

Invented a practical lightbulb

He designed and built the first power plant that was able to produce electricity (it was D.C)

What did Edison do in 1882 to help his first invention

39%

What percent of the energy in the U.S. is used to make electricity

10%

How efficent are incandescent lightbulbs

reduce up to 70%

How much could we reduce our electricity if the country converted to new tecnologies

4 times efficent as incandescent bulbs and last up to 10 times longer

What are the 2 main advantages of CFL's

They produce very little heat

Why are CFL's especially good to use in the summer

They are expensive

What is the disadvantage of CFL's

Compostion of matter

Made of tiny atoms and the differences depends on the kind of atoms, number of atoms and the way that the atoms are arranged

Element

Substances made of only one type of atom

Protons, neutrons and electrons

Atoms are made up of __________

Compound

When two elements are combine chemically to form a substance with different properties from the original elements

Atom

The smallest part of an element that still has the properties of the element is a __________

molecule

The smallest part if a compound that still has the properties of the compound is a __________

bubbling, temperature change, color change and precipitate

Indications of a chemical reaction is...

The composition of matter determines its properties of characteristics

Why is matter so important

Oxygen

What does O stand for

Nitrogen

What does N stand for

Potassium

What does K stand for

matter

anything that has mass and takes up space(volume)

mass

the amount of matter

Conservation of matter

The law of conservation of mass/matter; matter cannot be crated or destroyed but may be rearranged

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