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Flashcards in Finals Deck (46)
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1

Electro negativity

The ability to attract electrons

2

Covalent bond in which the shared electron pair comes from only 1 of the atoms

Coordinate covalent bond

3

Covalent bond between two atoms of significantly different electronegativities

Polar bond

4

Type of bond that is very important in determining the properties of water and of important biological molecules (proteins and DNA)

Hydrogen bond

5

The number of grams of an element that is numerically equal to the atomic mass of the element in amu

Atomic mass

6

The volume occupied by a mole of any gas at STP

Molar volume

7

The number of representative particles of a substance present in 1 mile of that substance

Avogadro's number (6.022*10^23)

8

An atom ion or molecule

Representative particle

9

0• C and 1 atm

STP

10

Percent by mass of each element in a compound

Percent composition

11

Smallest whole number ratio of atoms in a compound

Empirical formula

12

Combustion reaction

Reactant: oxygen gas

Product: carbon dioxide and water

13

Actual yield/theoretical yield*100

Percent yield

14

Characteristic of ionic compound

High melting point

15

How do atoms achieve noble gas configurations in single covalent bonds?

Two atoms share two electrons

16

According to the VESPAR theory, molecules adjust their shapes to keep which of the following as far apart as possible?

Pairs of valence electrons

17

What causes water molecules to have a bent shape?

Repulsive forces between unshared pairs of electrons

18

Weakest molecular attraction
Strongest

Dispersion
Hydrogen

19

How many liters are in a mole?

22.41 L

20

How to find the density at STP of a gas?

Molecular weight/22.41 liters per mole

G/mole

21

To find empirical formula...

Divide percent by molecular weight

Divided all by smallest number

22

Double replacement reaction

Two ionic compounds

23

How to figure out if single replacement reactions can take place

Activity series of metals (has to be higher above to replace it)

24

Example of a driving force of a reaction

Precipitate is formed

25

Basic solution contains a lot of____ions and is located where on the PH scale?

OH
8-14

26

Acids contain a lot of____ions and is located where on the PH scale?

Hydrogen
Lower than 7

27

S orbital

Spherical

28

P orbital

Dumbbell

29

4s2....

3d#

30

Exceptions in the d block

d9 and d4 become d10 and d5