Chapter 3.4 : Formulas and Names Flashcards Preview

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Flashcards in Chapter 3.4 : Formulas and Names Deck (21):
1

ionic compounds are always made of ____ and _____ ions

positive
negative

2

in the chemical formula of n ionic compound, the sum of the charges of the positive ions (cations), must equal...?

the sum of the charges of the negative ions (anions)

3

the formula of an ionic compound reflects the _____ ______ ____ of ions

smallest whole-number ratio

4

for metals that form cations with only one charge the name of the cation is...?

the same as the name of the metal

5

for metals that form cations with more than one possible charge the name of the cation is...?

the same as that of the metal plus roman numerals that show the charge

6

how do you construct the name of monoatomic anions

BASE NAME + suffix -IDE

7

define oxyanion

ions containing oxygen and another element

8

when naming oxyanions, if there is only two ions in the series, the one with more oxygen atoms has the ending ____ and the one with fewer has the ending ____

-ate
-ite

9

when naming oxyanions, if there are more than two ions in a series, the prefixes _____ (meaning less than), and ____ (meaning more than) are used along with the suffixes -ate and -ite

hypo-
per-

10

define hydrate

an ionic compound that contains a specific number of water molecules associated with each formula unit

11

the water molecules associated with the formula unit are called...?

waters of hydration

12

define anhydrous

not containing any associated water molecules

13

to name a hydrate just tack on ______ to the end of the usual name

prefix hydrate
the prefix indicates the number of water molecules associated with the formula unit

14

define binary molecular compound

a compound that contains only two different elements (bonded covalently)

15

what steps would you take to name a binary molecular compound

(prefix + name of 1st element) + (prefix + base name of 2nd element + -ide)

16

when is the only time you do not use a prefix for the first element in a molecular compound?

when it is mono

17

when naming a binary molecular compound how do you decide which element to put first?

you put the element which is more metal-like (towards the bottom left corner of the periodic table)

18

define acid

a molecular compound that is able to donate an H+ ion (proton). In water, this increases the concentration of H+

19

what steps would you take in order to name an acid?

hydro + base name of nonmetal + -ic +acid

20

how would you name an oxyanion acid with the ending -ate

base name of oxyanion + -ic +acid

21

how would you name an oxyanion acid with the ending -ite

base name of oxyanion + -ous +acid