Chemistry chapter 8
Which coefficients correctly balance the formula equation CaO+H2O=Ca(OH)2
1,1,1
Which corporations correctly Valasta formerly equation NH4NO2(s)=N2(g)+H2O(l)
1,1,2
Which equation is not balanced
2H2+O2=H2O
A chemical formula written over the arrow and a chemical patient is signifies
A catalyst for the reaction
When a solid produced by a chemical reaction that separates the solution it is called
A precipitate
According to the law of conservation of mass, the total mass of the reactants substances is
Always equal to the total mass of the products
Which observation does not indicate that a chemical reaction has occurred
Change in total mass of substances
What is the small hole number that appears in front of the formula in a chemical equation
Coefficient
And what kind of reaction does a single compound produced two or more simpler substances
Decomposition reaction
The equation AX= A + X is the general equation for a
Decomposition reaction
The reaction represented by the equation 2KClO3(s)=2KCl(s)+3O2(g) is a
Decomposition reaction
Their reaction represented by the equation 2HgO(s)=2Hg(l)+O2(g)is a
Decomposition reaction
And what kind of reaction does one element replaces a similar element in a compound
Displacement reaction
And what kind of reaction to the audience of two compounds exchange places in aqueous solution to form two new compounds
Double displacement reaction
The equation AX +BY=AY+BXIs the general equation for a
Double displacement reaction
In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
H2
In an equation, the symbol for a substance in the water solution is followed by
Parentheses a Q parentheses
What is the balance equation for the combustion of sulfur
S(s)+O2(g)=SO2(g)
A chemical equation is balanced when the
Same number of each kind of Adam comparison of the reactants and the products
The equationA+BX=AX+BIs the general equation for a
Single displacement reaction
The reaction represented by the equation Cl2(g)+2KBr(aq)=2KCl(aq)+Br2(l) is a
Single displacement reaction
The reaction represented by the equation Mg(s)+2HCl(aq)=H2(g)+MgCl(aq) is a
Single displacement reaction
The equation A+X=AXis the general equation for a
Synthesis reaction
And a chemical reaction
The mass of the reactants equal to the mass of the products
To balance a chemical equation, it may be necessary to adjust the
coefficients