Unit 10 test

Question 1

Avogadro’s number

Answer 1

number of particles in one mole of a substance 6.02 x E23

Question 2

Standard Temperature

Answer 2

STP The volume of a gas is usually measured at a
standard temperature and pressure 0C 1 atmosphere (atm).

Question 3

Molar volume

Answer 3

22.4 L volume occupied by 1 mole of gas

Question 4

Mole

Answer 4

the amount of substance which contains as many representative particles as there are atoms

Question 5

Standard Pressure

Answer 5

1 atm

Question 6

Molar mass

Answer 6

The mass of 1 mole of any element or
compound.

Question 7

Representative particle

Answer 7

the smallest unit of a substance that has properties of that substance

element - atom
covalent compound - molecule
ionic compound - formula unit

Question 8

atomic mass

Answer 8

Atomic mass is the mass of a single atom, usually measured in atomic mass units (amu). It is roughly equal to the number of protons and neutrons in the atom.