Name______
Hr 1 2 3 4 5
Molar Mass
Write the atomic mass for the following elements: round to the tenths place
H ______Li ______C ______O ______
Al ______N______Ca______P ______
Cu______S ______
I. Write the formula of the following substances:
Teacher Check______
II. Using the unifix cubes build each of the compounds listed above as accurately as possible.
Ex H2O = n☐n
n = H
☐ = O
Teacher Check ______
Molar mass = the sum of the component atomic masses, so gram formula mass (GFM) is the molar mass of the compound expressed in grams.
III. Using the atomic mass of each of the elements to represent the unifix cubes shown, calculate the molar mass of each of the previous compounds.
IV. How many total ions do each of the above compounds break into when dissolved in water?
a. ______b.______c. ______d. ______e. ______
Be sure to represent them with the unifix cubes.
Teacher Check ______
Name_____KEY______
Hr 1 2 3 4 5
Molar Mass
Write the atomic mass for the following elements: round to the tenths place
H _____1.0 amu____ Li ______6.9______C ______12.0______O____16.0______
Al _____27.0____ N_____14.0______Ca_____40.1______P _____31.0______
Cu____63.5_____ S _____32.1______
I. Write the formula of the following substances:
Teacher Check______
II. Using the unifix cubes build each of the compounds listed above as accurately as possible.
Ex H2O = n☐n
n = H See pic on last page for each of the unifix cube representations
☐ = O
Teacher Check ______
Molar mass = the sum of the component atomic masses, so gram formula mass (GFM) is the molar mass of the compound expressed in grams.
III. Using the atomic mass of each of the elements to represent the unifix cubes shown, calculate the molar mass of each of the previous compounds.
IV. How many total ions do each of the above compounds break into when dissolved in water?
a____4_____ b.______3____ c. _____2____ d. ____5____ e. ____2_____
Be sure to represent them with the unifix cubes.
Teacher Check ______