exam 1

Question 1

electrolyte

Answer 1

when dissolved in water, they conduct electricity

Question 2

strong electrolytes

Answer 2

dissociates about 100% in water

they conduct well

Question 3

weak electrolytes

Answer 3

they only partially dissociate

only slightly conductive

Question 4

double headed arrow means?

Answer 4

in equilibrium; not fully dissociated

Question 5

dissociated

Answer 5

compound splits into its constituent cations and anions

Question 6

nonelectrolytes

Answer 6

when dissolved in water, they do not conduct electricity

no dissociation at all

Question 7

what determines whether a substrate is a strong or weak electrolyte (or nonelectrolyte)?

Answer 7

% dissociation

Question 8

solution

Answer 8

homogenous mixture of two or more substances (can be any phase)

Question 9

solute

Answer 9

substance present in the smaller amount

Question 10

solvent

Answer 10

substance present in the larger amount

Question 11

aqueous solution

Answer 11

solvent is water; solute is originally liquid or solid

Question 12

concentration units

Answer 12

solute for solvent or solute per solution

Question 13

parts per million

Answer 13

grams of solute per 1,000,000g of solution

Question 14

parts per billion

Answer 14

grams of solute per 1,000,000,000g of solution

Question 15

molarity

Answer 15

how many moles you have per volume (moles/Liter)

Question 16

millimolar

Answer 16

10^-3M or mM

Question 17

micromolar

Answer 17

10^ -6M or (micro symbol)M

Question 18

Molarity is always in

Answer 18

mols per Liter!!!!!!!!!

Question 19

chemistry

Answer 19

study of matter, its composition, structure, and properties

Question 20

matter

Answer 20

anything that has mass and occupies space

Question 21

mass

Answer 21

defines the quantity of matter

Question 22

what are the two types of matter

Answer 22

pure substances and mixtures

Question 23

what is a pure substance

Answer 23

same physical and chemical properties all the way through. Can not be separated by physical means

Question 24

what is a mixture

Answer 24

composed of two or more substances, can be broken down by physical means

Question 25

two types of a pure substance

Answer 25

element, compound

Question 26

two types of a mixture

Answer 26

homogenous or heterogenous

Question 27

element definition

Answer 27

pure substance that can not be broken down by physical or chemical means and still retain the same properties

Question 28

compound

Answer 28

pure substances that are composed of two or more elements combined in definite proportions. CAN be separated by chemical means

Question 29

homogenous mixture

Answer 29

everything is distributed evenly

Question 30

heterogenous mixture

Answer 30

everything that is mixed can still be seen as separate substances