NAME______________________________________________________
PERIOD___________
DATE______________________________
MIXTURES, ELEMENTS, AND COMPOUNDS INFORMATION SCAVENGER HUNT
DIRECTIONS: Walk around the room to find the information needed to complete this worksheet. Sit down once you
get to the Homework Questions section.
Mixtures
Define mixture:
Define heterogeneous mixture:
Provide 3 examples of a heterogeneous mixture:
1.
2.
3.
Define homogeneous mixture:
Provide 3 examples of a homogeneous mixture:
1.
2.
3.
Define solution:
Separating Mixtures
Define filtration:
Define distillation:
Define crystallization:
Define sublimation:
Define chromatography:
Elements
Define element:
Provide 3 examples of an element:
1.
2.
3.
What is the periodic table?
Compounds
Define compound:
Provide 3 examples of compounds:
1.
2.
3.
Law of Definite Proportions
State the Law of Definite Proportions:
What is the equation for Percent by Mass?
Law of Multiple Proportions
State the Law of Multiple Proportions:
HOMEWORK QUESTIONS
1. Classify each of the following as either a heterogeneous or homogeneous mixture and STATE WHY:
a. Tap water_______________________________________________________________________
b. Raisin muffin _____________________________________________________________________
c. Seawater (composed of sand, salt, and water) __________________________________________
2. Describe the separation technique that could be used to separate each of the following mixtures:
a. Two colorless liquids ______________________________________________________________
b. A non-dissolving solid mixed with a liquid ______________________________________________
c. Sand and salt ____________________________________________________________________
d. The components of ink _____________________________________________________________
e. Helium and oxygen gases ___________________________________________________________
3. Solve the following Percent by Mass problems:
a. A 25.3 g sample of an unknown compound contains 0.8 g of oxygen (O2). What is the percent by mass of
oxygen in the compound?
b. Magnesium (Mg) combines with oxygen (O2) to form magnesium oxide (MgO). If 10.57 g of magnesium
reacts completely with 6.96 g of oxygen, what is the percent by mass of oxygen in magnesium oxide?
c. Two unknown compounds are tested. Compound I contains 15.0 g of hydrogen (H2) and 120.0 g of
oxygen (O2). Compound II contains 2.0 g of hydrogen and 32.0 g of oxygen. Are the compounds the
same? Explain.