Chapter 10 Vocab

Question 1

Avogadro’s hypothesis

Answer 1

qual volumes of gases at the same temperature and pressure contain equal numbers of particles

Question 2

Avogadro’s number

Answer 2

the number of representative particles contained in one mole of a substance; equal to 6.02 x 10^23 particles

Question 3

empirical formula

Answer 3

a formula with the lowest whole-number ration of elements in a compound

Question 4

molar mass

Answer 4

a term used to refer to the mass of a mole of any substance

Question 5

molar volume

Answer 5

the volume occupied by 1 mole of a gas at standard temperature and pressure (STP)

Question 6

mole (mol)

Answer 6

the amount of substance that contains 6.02x10^23 representative particles of that substance

Question 7

percent composition

Answer 7

the percent by mass of each element in a compound

Question 8

representative particle

Answer 8

the smallest unit into which a substance can be broken down without a change in composition, usually atoms, molecules, or ions

Question 9

standard temperature and pressure (STP)

Answer 9

the conditions under which the bolume of a gas is usually measured; standard temperature is 0 C and standard pressure is 101.3 kPa, or 1 atmosphere (atm)