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CHEMISTRY PROJECT PREZI

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by

Grey Hohn

on 24 April 2013

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Transcript of CHEMISTRY PROJECT PREZI

CHEMISTRY 7th grade science READING CHEMICALS TYPES OF CHANGES CHEMICAL PROPERTIES THESE ARE ONLY TWO BROAD TYPES OF CHANGES BALANCE THESE EQUATIONS CHEMICAL EQUATIONS BALANCING CHEMICAL EQUATIONS PERIODIC
TABLE MATTER PURE SUBSTANCES MIXTURES THE BASICS Matter is what makes up everything. Mixtures can be split into two parts
Heterogeneous, and Homogeneous Pure substances consist of
elements, and compounds The periodic table is a tool used to name and place elements. A chemical equation is used to symbolize
how two or more elements make other elements To decide if a chemical equation is balanced
multiply the coefficient by the subscript 2H2+O2 -Can be observed and measured without changing the type of matter being studied -Substances react or do not change substances Matter itself is made of
tiny particles called atoms. Atoms are much too small to be seen with a classroom microscope.Atoms are also the smallest part of an element. Heterogeneous mixtures are where
something added doesn't mix with the substance.
EX: Vegitable soup Homogeneous mixtures are when something
added mixes into the substance.
EX: food coloring Elements make up compunds.
EX: H2O Every element gets an atomic number,
elemental symbol, elemental name,
and atomic mass. A chemical equation uses arrows and reactants
to produce one or more molecules. CH4+2O2 H4+C2+(O+H3)3 PHYSICAL PROPERTIES melting and boiling point,density, and color can
help identify a substance. The ability to burn and rust can be used to identify
a substance. BY:GREY HOHN
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