True or False

Question 1

All Chemical symbols use a two letter notation to represent the name of an element

Answer 1

False

Question 2

The Chemical formulas HN3 and NH3 represent two ways for denoting the same compound

Answer 2

False

Question 3

A molecule is a group of two or more atoms that functions as a unit because the atoms are bound together by chemical forces.

Answer 3

True

Question 4

When the formula for a compound contains parentheses this is the indication that the compound is unstable and subject to decomposition.

Answer 4

False

Question 5

The equation N2 + 3H2 reacts to form 2NH3 means that 1 gram of N2 reacts with 3 grams of H2 to form 2 grams of NH3.

Answer 5

False

Question 6

A mole ratio is used to convert the moles of starting substance to the moles of desired substance.

Answer 6

True

Question 7

A gas behaves as an ideal gas. At a temperature of 25.0 C and a pressure of 760.0 torr, one mole of the gas occupies a volume of 22.414 liters.

Answer 7

False

Question 8

One mole of O2 molecules contains 6.02 x 10 to 23 molecules.

Answer 8

True