Unit 3 Key Terms/Concepts Flashcards Preview

Chemistry 1115 > Unit 3 Key Terms/Concepts > Flashcards

Flashcards in Unit 3 Key Terms/Concepts Deck (96)
Loading flashcards...
1

What are the 4 ways to represent electron configuration?

Full configuration
Short hand/core/condensed
Lewis/Electron-Dot symbols

2

To find the number of valence electrons in an element, you must know the _____, because they are equivalent (except for Helium)

The group number on the periodic table

3

what is the maximum number of dots per side in a Lewis configuration

2

4

Octet rule

atoms tend to gain, lose, or share
electrons in order to obtain an octet in their valence
shells due to the stability of the ns^2p^6 configuration.
(2+6 = 8; octet = set of 8)

5

elements that follow the duet rule (not the octet rule)

H, He, Li, and Be

6

Nonmetals tend to ___ an electron to reach an octet

gain

7

metals ___ their valence electrons to become cations

lose

8

covalent bonds

a pair of electrons shared between two atoms.

9

binary covalent compounds.

Compounds containing two different nonmetals that
share valence electrons

10

a compound is ionic if

the first element is a metal or it starts with the polyatomic ion NH4+ (ammonium ion).

11

Potassium oxide

K2O

12

a binary compound is covalent if

the first element in the formula or the name is a
nonmetal.

13

N2O

dinitrogen monoxide

14

acid

a substance that releases H+ ions (or protons or hydronium ions) in water solutions.

15

Most acid formulas start with

H (Hydrogen)

16

monoprotic acids

can produce only one H+ (or proton or hydronium ion) in water

17

polyprotic acids

Acids that can produce two or more H+’s in water

18

Binary acids contain

H and one other element (Not Oxygen)

19

Binary acids are named according to what pattern

hydro + part or all of element name + ic acid

Ex: HCl hydrochloric acid

20

Oxyacids (oxoacids) contain

O (Oxygen)

21

The general formula for oxyacids is

General formula = HnXOm (X is the “central
atom”)

22

Oxyacids containing -ate ions end with___

-ic acid

23

Polyatomic names determine the

oxyacid name

24

Oxyacids containing -ite ions end with

-ous acid

25

water formula

H2O

26

Hydrogen Peroxide

H2O2

27

Methane

CH4

28

Ammonia

NH3

29

C2H5OH

drinking alcohol, ethyl alcohol or ethanol

30

HC2H3O2 or CH3COOH

vinegar/acetic acid (5%)