Exam 12: Chemical Bonding

If 20.0 g of compound XY decomposes to form 12.0 g of element X and 8.00 g of element Y,______________ g of element X will be formed by the decomposition of 40.0 g of compound XY.

A compound consists of only magnesium,carbon,and oxygen.If the percentage by mass of Mg is 63.9% and that of C is 12.2%,what is the percentage by mass of O?

The formula mass of acetic acid,HC₂H₃O₂,is ______________ u.

The percentage by mass of carbon in diamond is about

Which compound is the major component of table salt?

A stream of a certain liquid compound is attracted to an electrically charged rod.The compound is probably

Which of the following was not a part of Dalton's atomic theory?

A stream of a certain liquid compound is not attracted to an electrically charged rod.The compound is probably

The statement "Different samples of a pure compound always contain the same elements in the same proportion by mass" is known as the law of ______________.

A positively charged ion is called a(n)______________.

The formula for nickel(II)nitrate would be ______________.

What is the correct formula for calcium phosphate?

An ammonia molecule is

Water has unusual physical properties,as compared with H₂S,H₂Se,and H₂Te,because of ______________ bonding.

Which of the following ions is not isoelectronic with the other three?

What is the formula of a compound formed from the ions M³⁺ and X^3-?

When sodium and chlorine react to form sodium chloride,an ionic compound,

Which two elements are most likely to combine with one another to form an ionic compound?

A pair of electrons shared by two atoms forms

Which of the following elements commonly forms an ion with a 2+ charge?