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44 terms

Chemistry: Chapter 8

STUDY
PLAY
The actual knowledge about what products are produced in a chemical reaction is obtained by...
laboratory analysis
Once the correct formula for a reactant in an equation has been written, the...
formula should not be changed
In writing an equation in which hydrogen gas appears as a product, the correct representation of hydrogen gas is
H
In a chemical equation, the symbol " " is read
yields
In a chemical equation, the upward pointing arrow is used for a
gaseous product
How would oxygen be represented in the formula equatoin for the reaction of methane and oxygen to yield carbon dioxide and water?
O
What is the ratio of hydrogen to cholorine in the equation ?
1:1
Balanced formula equatoins express allof the following EXCEPT
mechanisms by which reactants become restructured into products
A reversible reaction is indicated by
two yield symbols pointing in opposite directions
When the equation is correctly balanaced, the coefficent of Fe is
9
In a chemical equation, the symbol "(s)" indicates that the substance is
solid state
Write the word equation that represents the production of water from hydrogen and oxygen.
Hydrogen and oxygen yields water.
Write the formula equation for the formation of carbon dioxide from carbon and oxygen.
...
Balance the formula equation
...
Balance the formula equation
...
The reaction is an example of a
synthesis reaction
The reaction is an example of a
single-replacement reaction
The equation is an example of a
decomposition reaction
In one type of synthesis reaction, an element combines with oxygen to yield a
oxide
A metal carbonate, when heated, decomposes into a metal oxide and
carbon dioxide
In the equation , iron has been replaced by...
aluminum
The reaction of calcium oxide (CaO) with water will yield
calium hydroxide
Predict the product of the following reaction
MgCO
What product(s) will result from decomposition of HgO?
mercury and oxygen
A reaction in which two or more substances combine to form a new substance is called a
synthesis reaction
The equation AX A+X is the general equation for a ____________ reaction.
decomposition
A reaction in which one element replaces a similar element in a compound is called a __________ reaction.
single-replacement
______________ is the decomposition of a substance by an electric current.
electrolysis
Group-1 metals react with water to produce ____________ and metall hydroxides.
hydrogen
The ability of an element to react is referred to as the element's....
activity
An element in the activity series can replace any element....
below it on the list
An activity series is useful because it allows a person to predict...
whether or not a certain chemical reaction will occur
For a single-replacement reaction, an element will replace from a compound in aqueous solution those elements...
below it in the activity series
To replace hydrogen from steam, a metal must be
above cobalt in the activity series
In the activity series, any metal above hydrogen reacts with acids, replacing...
hydrogen
The synthesis of oxides by reaction with oxygen occurs for any metal in thea ctivity series
above silver
Oxides are formed only indirectly by metals in the activity series
below mercury
In the presence of oxygen, gold can be expected to
not react
In the activity series, oxides of metals below copper
decompose with heat alone
In the activity series, oxides of metals below chromium yield metals when
heated with hydrogen
Since mercury is below copper in the activity series, heating HgO will result in
decomposition
Predict what will happen when calcium metal is added to a solution of magnesium chloride.
calcium chloride will form
Predict what will happen when zinc is added to water.
No reaction will occur
Predict what will happen when lead is added to nitric acid.
Hydrogen will be released.