3rd quarter exam (Gen Chem II)

Question 1

solid in density

Answer 1

high

Question 2

liquid in density

Answer 2

high

Question 3

gas in density

Answer 3

low

Question 4

anything that is made of particles that takes up space

Answer 4

Matter

Question 5

trait that is observed that does not change chemical composition

Answer 5

Physical Property

Question 6

physical property that depends on the amount of matter present

Answer 6

Extensive Property

Question 7

physical property that does not depend on the amount of matter present

Answer 7

Intensive Property

Question 8

amount of matter present in an object

Answer 8

Mass

Question 9

amount of space an object occupies

Answer 9

Volume

Question 10

how heavy a substance is

Answer 10

Density

Question 11

Bending

Answer 11

Malleability

Question 12

force that causes molecules on the surface of a liquid to be pushed together and form a layer

Answer 12

Surface tension

Question 13

Examples of surface tension

Answer 13

Basilik lizard, Jesus Lizard, Water strider, Fish spider

Question 14

Resistance of liquid to flow

Answer 14

Viscosity

Question 15

Pressure of the vapor resulting from evaporation

Answer 15

Vapor Pressure

Question 16

temperature in which the vapor pressure of the liquid is equal to the atmospheric pressure

Answer 16

Boiling point

Question 17

Amount of heat needed to vaporise

Answer 17

Molar heat of Vaporization

Question 18

interaction between atoms and molecules, these are attractive forces

Answer 18

inter molecular forces

Question 19

IMF that has hydrogen

Answer 19

hydrogen bonding

Question 20

IMF that polar molecules interact that two charges are separated

Answer 20

Dipole-dipole

Question 21

IMF that ionic molecules and polar molecules interact

Answer 21

Ionic Bonding

Question 22

IMF that non polar molecules interact

Answer 22

London forces

Question 23

Random

Answer 23

Amorphous Solid

Question 24

Arranged in regular

Answer 24

Crystalline Solid

Question 25

A homogeneous mixture of two or more substances.

Answer 25

Solution

Question 26

uniform, even distribution

Answer 26

Homogeneous

Question 27

Composition of Solution

Answer 27

Solute dissolves in Solvent

Question 28

Properties of Solutions

Answer 28

1. Do not style upon long standing 2.Homogeneous 3. Pass through filters 4. Diffusible 5. Clear even when colored 6. Can undergo osmosis 7. Variable composition

Question 29

Factors affecting rate and formation of solution

Answer 29

Temperature, Particle Size, Rate of Stirring

Question 30

Factors affecting solubility

Answer 30

Nature of Solid and Liquid, Temperature, Pressure

Question 31

Property of a substance that allows it to form uniform mixtures

Answer 31

Solubility

Question 32

amount of solute dissolved in a given amount of solution.

Answer 32

Concentration

Question 33

Mass Percent

Answer 33

Mass %= (mass of the solute/mass of solution) x 100%

Question 34

Volume Percent

Answer 34

Volume % = (volume of the solute/ volume of the solution)x 100%

Question 35

Mole Fraction (X)

Answer 35

Xa= na/nt

Question 36

Molarity (M)

Answer 36

M= (mol of solute/ L of solution)

Question 37

Molality (m)

Answer 37

m= (mol solute / kg solvent)

Question 38

Parts per Million

Answer 38

ppm= (g solute/ g solution)x 10^6

Question 39

Process of using chemical equations to calculate relative masses and moles of reactants and products.

Answer 39

Stoichiometry

Question 40

The physical property of a solution depends only on the number (concentration) of solute particles (molecules or ions) present in a given quantity of solvent and not on their chemical identities.

Answer 40

Colligative property

Question 41

vapor pressure of a component in a solution depends on its mole fraction times the vapor pressure exerted by the pure component.

Answer 41

Raoult's law

Question 42

movement of a solvent through a semipermeable membrane from a region of lower solute concentration (higher solvent concentration) to a region of higher solute concentration (lower solvent concentration).

Answer 42

Osmosis

Question 43

solution with an osmotic pressure lower than that in cells. Causes cells to hemolysis (burst).

Answer 43

Hypotonic solution

Question 44

solution with an osmotic pressure higher than that in cells. Causes cells to crenate (shrink)

Answer 44

Hypertonic solution

Question 45

solution with an osmotic pressure equal the the cells. Has no effect on the cell's size.

Answer 45

Isotonic solution

Question 46

Osmolarity

Answer 46

molarity x I