Test 6 Review/Prep

The simplest whole number ratio of elements in a compound is called a(an) ___ formula

In what type of reaction do elements combine to form a compound?

• synthesis

• decomposition

• replacement

• combustion

What type of reaction would occur if a compound broke apart into its constituent elements?

• synthesis

• decomposition

• replacement

• combustion

If a hydrocarbon was burned in the presence of oxygen and carbon dioxide and water were the products of that burning, what type of reaction would this be?

• synthesis

• decomposition

• replacement

• combustion

A reaction in which metals trade places in compounds and/or nonmetals trade places in compounds would be a ___ reaction.

• synthesis

• decomposition

• replacement

• combustion

Check each of the following statements that are true of the Law of Conservation of Mass.

• is the reason equations must be balanced

• says matter cannot be created or destroyed during ordinary chemical processes

• was discovered by Neils Bohr

• means amount of products has to equal original amount of reactants

The percent by mass of each element in a compound is known as ___.

The mass in grams of one mole of an element or compound is the ___.

• atomic mass

• mass number

• molar mass

• atomic number

The mass in AMUs of one atom of an element, one molecule of a covalent compound, or one formula unit of an ionic compound is the ___

• atomic mass

• mass number

• molar mass

• atomic number

The number of protons in the nucleus of an atom is the ___.

• atomic mass

• mass number

• molar mass

• atomic number