chemical reactions dm
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Chemical ReactionsTRANSCRIPT
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Elements, Atoms, Compounds and Molecules.
By D’Arcy Meredith
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Elements
An element is a pure substance made up of one type of atom.
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Atoms
An atom a fundamental piece of matter made up of protons, neutrons and electrons.
Protons
Electrons
Neutrons
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Metals
Metal is an element, compound, or alloy characterized by electrical and heat conductivity .
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What is non-metal?
A non-metal is an element on the periodic table that does not have the properties of a metal element such as malleability. Non metals are usually found as gases in nature or weak, brittle solids.
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Periodic Table
Description of what a periodic table is?
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What is a compound?
A chemical compound is a substance composed of two or more different elements chemically bonded together in a fixed proportion by mass.
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Chemicsal Reaction
A chemical reaction is a process that leads to the transformation of one set of chemicals substances to another.
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Identify a chemical reatcion
Production of heat, light, gas or precipitate.
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Physical and Chemical changes. A chemical change is
non reversible as a physical change is. For example, the burning of wood is a chemical change, as you can't unburn it, whereas the freezing of water would be a physical change because it can be reversed.
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Factors affecting a Reaction Rate.
Temperature, concentration, size of particles or using a catalyst.
Add a picture.
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Bibliography
http://wiki.answers.com/Q/What_is_an_element http://
www.qrg.northwestern.edu/projects/vss/docs/Propulsion/1-what-is-an-atom.html
http://en.wikipedia.org/wiki/Metal http://wiki.answers.com/Q/What_is_a_non-metal http://en.wikipedia.org/wiki/Chemical_compound http://en.wikipedia.org/wiki/Chemical_reaction http://www.virted.org/chemist/pcchange.html http://www.purchon.com/chemistry/rates.htm