Unit 5 Test

The Mole

100

The name for the number used to convert between moles and atoms, molecules, or particles.

Avogadro's Number

200

This numerical value is found beneath the elemental symbol, and is used to convert between moles and grams. 

molar mass

300

This unit is used to measure mass

grams

400

This term refers to the way we view the mole, similar to a dozen or a pair.

Counting Unit

500

This numerical value serves as the exponent in Avogadro's Number 

23

Molar Conversion

100

This term refers to the tag given to a number to identify what it is measuring 

Units 

200

How many atoms are there in 2.0 moles of sodium?

1.20 x 10²⁴ atoms of sodium

300

Convert 4.5 x 10²⁴ molecules of NaCl to moles of NaCl

7.47 moles of NaCl

400

Convert 450 grams of lithium to atoms of lithium. 

3.90 x 10²⁵ atoms of lithium

500

This value was given in classwork practice to convert between moles and volume (liters).

1 mole=22.4 L

Mole-Mole Stoichiometry

100

This term refers to the fraction used in stoichiometry. 

Ratio

200

This term refers to the location where the given's coefficient is placed within the mole fraction. 

denominator (bottom)

300

This term refers to where the find is placed within the mole fraction. 

numerator (top)

400

K + Cl₂ →  KCl

If 2.0 moles of Cl₂ react, how many moles of KCl are produced?

4.0 moles KCl

500

H₂ + O₂  →  H₂O

If 1.0 moles of O₂ react, how many moles of H₂ must have reacted completely ?

4 moles of H₂

Gram-Gram Stoichiometry

100

This is the number that refers to how many steps a gram to gram stoichiometry problem typically contains.

3

200

This value is used in gram to gram stoichiometry problems to convert between grams and moles. 

molar mass

300

This refers to what is used in the middle step of a gram to gram reaction. (found from the balanced reaction)

mole fraction (ratio)

400

2Na + Cl₂ → 2NaCl

If 3.5 grams of sodium react, how many grams of NaCl are produced?

8.90 g of NaCl

500

CH₄ + O₂ →  CO₂ + H₂O

If 50 grams of methane react, how many grams of water are formed. 

112.29 grams of water

Review

100

This scientist proposed the idea of atomos.

Democritus

200

This scientist conducted the experiment that led to the discovery of the nucleus of an atom. 

Rutherford

300

This reaction type requires the presence of oxygen and produces carbon dioxide and water. 

Combustion

400

This reaction type can be thought of as the process of breaking apart. 

Decomposition

500

Name the following compound.

Fe(NO₃)₃

iron(III) nitrate