chapter 7 review A

Question 1

changing a subscript in a correctly written chemical formula will

Answer 1

change the formula so that it no longer represents the same compound

Question 2

in a polyatomic ion, the algebraic sum of the oxidation numbers of all atoms is equal to

Answer 2

the charge of the ion

Question 3

the first part of the name of a binary ionic compound is the

Answer 3

cation

Question 4

the empirical formula may not represent the actual composition of a

Answer 4

molecular compound

Question 5

to determine the correct molecular formula of a compound from an empirical formula, one must determine the

Answer 5

formula mass

Question 6

what follows an element’s symobl in a chemical formula to indicate the number of atoms of that element in one molecule of the compoudn

Answer 6

subscripted number

Question 7

a chemical formula for an ionic compound represents one

Answer 7

formula unit

Question 8

what is the correct notation for a calcium ion whose outershell is a full octet

Answer 8

Ca^2+

Question 9

what is the correct name for the NO3- ion

Answer 9

nitrate

Question 10

what is the correct name for the acid CH3COOH

Answer 10

acetic acid

Question 11

oxidation numbers are used to indicate the

Answer 11

distribution of electrons among the bonded particles in a compound

Question 12

atoms have an oxidation number of zero in a

Answer 12

pure element

Question 13

the formula mass of any compound is described in units of

Answer 13

amu

Question 14

the simplest whole number ratio of moles of each element in a compound is known as the

Answer 14

molecular formula