chem defns extra

Question 1

gay lussacs law

Answer 1

the volumes measured at the same temperature and pressure of reacting gases and their gaseous products are in small whole number ratios

Question 2

hard water

Answer 2

water which does not easily form a lather with soap

forms a scum with soap

Question 3

temporary hardness

Answer 3

removed by boiling caused by calcium hydrogencarbonate

Question 4

heinsbergs uncertainty priciple

Answer 4

it is not possible to measure the exact position and velocity of electron in atom at the same time

Question 5

ideal gas

Answer 5

a gas that obeys the gas laws at all values of temperature and pressure

Question 6

isotopes

Answer 6

are atoms of the same element with different mass numbers due to different number of neutrons

Question 7

intermolecular

Answer 7

forces between molecules

Question 8

intramolecular

Answer 8

forces between atoms in a molecule

Question 9

Kw

Answer 9

(H+)(OH-)

Question 10

limiting reagent

Answer 10

is a substance that is totally consumed when a chemical reaction is complete

Question 11

mole

Answer 11

contains the avogadros number 61023 of particles or relative molecular mass in grams

Question 12

nitrogen fixation

Answer 12

conversion of atmospheric nitrogen to compounds that can be used by plants

Question 13

pi bond

Answer 13

side on overlap of p orbitals

Question 14

relative atomic mass

Answer 14

average mass of atoms of element relative 1/12 mass of carbon 12 atom or isotope

Question 15

strong acid (arrhenius)

Answer 15

completely dissociates into ions in dilute aqueous solution

Question 16

weak acid (arrhenius)

Answer 16

Slightly dissociates into H30+ ions in dilute aqueous solution