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The word equation solid carbon + oxygen gas = carbox dioxide gas + energy represents a chemical reaction because
the reaction releases energy
Predict what happens when magnesium metal is added to a solution of calcium chloride
NO REACTION OCCURS
If a certain metal is placed in an ionic solution containing another metal and no reaction occurs, then the solution is
higher on the activity series
Active metals react with certain acids, such as hydrochloric acid, to yield a metal compound and
What is the small whole number that appears in front of a formula in a chemical equation?
What is the balanced equation when aluminum reacts with copper(II) sulfate?
2AL + 3CuSO4 = Al2(SO4)3+3Cu
After the first steps in writing an equation, the equation is balanced by
adjusting coefficients to the smallest whole-number ratio
If metal X is higher than metal Y in the activity series, then metal X
loses electrons more readily than does the metal Y
Which of the following is a formula equation for the formation of carbon dioxide from carbon and oxygen?
C + O2 = CO2
Which observation does not indicate that a chemical reaction has occurred?
Change in total mass of substances
In a double-displacement reaction, hydrogen chloride and sodium hydroxide react to produce sodium chloride. Another product is
A chemical equation is balanced when the
same number of each kind of atom appears in the reactants and in the products
An insoluble gas that forms in a double-displacement reaction in aqueous solution
bubbles out of solution
What is the name of a list of elements arranged according to the ease with which they undergo certain chemical reactions?
In what kind of reaction do two or more substances combine to form a new compound?
In the word equation, sodium oxide + water = sodium hydroxide, the formula for sodium hydroxide is represented by
If chlorine gas is produced by halogen replacement, the other halogen in the reaction must be
In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
The reaction represented by the equation Ca(s) + 2HCl(aq) = H2(g) + CaCl2(aq) is a
single displacement reaction
Predict what happens when potassium is added to a solution of nickel chloride
Potassium chloride forms
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