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knowledge about what products are produced in a chemical reaction is obtained by?
Laboratory analysis
Which observant does NOT indicate that a chemical reaction has occurred?
Change in a total Mass of substances
A solid produced by a chemical reaction in solution that separates from the solution is called?
A precipitate
After the correct formula for a reactant in an equation has been written ,the
Formula should not be changed
In writing an equation that produces hydrogen gas, the correct representation of hydrogen gas is
H
2
what small whole number that appears in front of a formula in a chemical equation
a coefficient
To balance a chemical equation it may be necessary to adjust the
coefficients
according to the law of conservation of mass the total mass of the reacting substances is
always equal to the total mass of the products
which word equation represents the reaction that produces water from hydrogen and oxygen
hydrogen plus oxygen yields water
how would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water
O
2
which of the following is a formula equation for the formation of carbon dioxide from carbon and oxygen
C+O
2
->CO
2
For the formula equation 2Mg+O
2
->2MgO the word equation would be
magnesium plus oxygen
in an equation the symbol for a substance in water the solution is followed by
(aq)
A chemical formula written over the arrow in a chemical equation signifies
a catalyst for the reaction
Author
Anonymous
ID
1193
Card Set
KK
Description
chem chapter 8 review
Updated
2009-11-20T03:31:50Z
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