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