Chemistry review

Which expression defines molarity?

#moles / Liter solution

What is the mass of 1 mole of carbon?

12 grams

What is happening in the following reaction? 2KClO3 2KCl + 3O2

2 moles of KClO 3 decomposes to form 5 moles of product.

A mole is:

6.02 × 1023 atoms

The requirements for one type of atom to substitute for another in a solid solution are:

An atom must be similar in size, The substituting atom must be from the same Group.

Which of these is an ion?

PO 4-3

Polar molecules will usually dissolve in _____ solvents.

Polar solvents.

What is a solution?

a homogeneous mixture composed of two or more substances

The concentration of the solid phase _____ the quantity present.

always remains the same regardless of

A dissolved solute:

consists of submicroscopic atoms or molecules

Solutions which can conduct electricity are called_____

electrolytes

Do solutions and liquids of ionic or covalent character tend to conduct electricity best?

ionic

Equilibrium is established in a reversible reaction when

rate of reaction of products = rate of reaction of reactants

Ionic bonds result from elements_____.

that share electrons

At STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g):

will occupy the same volume, will contain the same number of molecules