Download Unit 5 - Earth`s Natural Resources

UNIT 5 – EARTH’S MINERAL RESOURCES
Where do we find mineral resources and how are they processed?
Main Ideas:
 The resources for all human activities must be obtained from Earth’s atmosphere,
hydrosphere, and outer layer of the lithosphere. These resources are not uniformly
distributed.
 The feasibility of mining and extracting a mineral resource depends, in part, on how
easily a particular metal can be processed and used, which depends on its chemical
reactivity. Active metals are more difficult to process than are less-active metals and
tend to corrode more quickly.
 Chemical reactions can be used to remove metals from minerals and ores. Chemical
reactions come in several different types.
Objectives:
 Describe Earth’s atmosphere, hydrosphere, and lithosphere, including the distribution
of resources among them.
 Describe or recognize factors that determine the feasibility of mining an ore at a
specific site.
 Explain why minerals of more active metals are more difficult to refine and process
than minerals of less active metals.
 Match chemical reactions with their type.
Objectives from the MA State Frameworks:
 5.2 Classify chemical reactions as synthesis (combination), decomposition, single
displacement (replacement), double displacement, and combustion.
STUDY GUIDE
CONTENT:



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The three “spheres” of Earth and
the resources found in each
Feasibility of mining factors
Relate metal reactivity to ease of
mining and processing
four reaction types (see lab)
NON-MATH SKILLS:

Match types of reactions when
given a chemical reaction

Use the activity series for single
displacement reactions and other
questions about metal reactivity
PRACTICE QUESTIONS
1) Which of the following is NOT a
place where we find Earth’s natural
resources?
a. lithosphere
b. atmosphere
c. blogosphere
d. hydrosphere
2) Which of the following resources
would be found in the
hydrosphere?
5) Which TWO the following are a
qualities of a “useful ore”?
a. low percent of metal within
the ore
b. high percent of metal
within the ore
c. difficulty in processing the
ore
d. easy to process the ore
6) Which metals are easier to process?
a. nitrogen gas
a. active metals
b. iron ore
b. non-active metals
c. water
c. radioactive metals
d. silicates
3) Where do we get natural resources
from in the lithosphere?
a. inner core
b. crust
7) Are metals at the top of the activity
series active or non-active?
a. active
b. non-active
8) In the reaction A + BC  B + AC,
c. mantle
A must be __________ B on the
d. outer core
activity series.
4) List four factors that must be
a. higher than
considered when opening a new
b. lower than
mine.
c. equal to
9) A + BC  B + AC = what type of
reaction?
a. synthesis
b. decomposition
c. single replacement
d. double replacement
10) AB  A + B = what type of
reaction?
a. Synthesis
b. Decomposition
c. Single replacement