Chapter 3 Chemical Equations

Question 0

Decomposition reactions

Answer 0

C——> a + b

Question 1

Combination reactions

Answer 1

A + b —–> c

Question 2

A combination reaction between a metal and a nonmetal produces an

Answer 2

Ionic solid

Question 3

Decomposition reactions occur frequently when ______

Answer 3

Heated

Question 4

Combustion reactions are

Answer 4

Rapid reactions that produce a flame

Question 5

Most combustion reactions involve ___

Answer 5

O2

Question 6

Hydrocarbons combusted with oxygen create

Answer 6

CO2 gas and H2O gas

Question 7

Formula weight (FW) =
H2SO4

Answer 7

H2SO4 = 2(atomic weight of H)+(AW of S)+4(AW of O)

So 2(1.01)+(32.1)+4(16)= 98.1 amu

Question 8

Formula weight is all the atomic weights of a compound or atoms added together

Answer 8

Absorb

Question 9

Formula weight is also know as the _______ weight

Answer 9

Molecular

Question 10

If Cl has an atomic weight of 35.45 AMU, what is the mass of a mole of Cl?

Answer 10

35.45 grams

Question 11

If H2O has a formula weight of 18 AMU, what mass does a mole of H2O have?

Answer 11

18 grams

Question 12

The molar mass in grams per mole of any substance is numerically equal to its ______ ______ in _____ _____ units

Answer 12

Formula weight

Atomic mass

Question 13

Combustion analysis

Answer 13

Technique to learn the empirical formula