A.1 Striking It Rich
Copper can be coated (plated) with zinc by making a Zn(OH)2 solution and placing the copper in the solution. The result is a silver color. When the zinc-coated copper is heated a copper/zinc alloy is created called brass which has a gold color.
A.2 Using Things Up
Define the Law of conservation of matter
How does a natural law differ from a societal law?
A.3 Tracking Atoms
Chemists acknowledge the law of conservation of matter each time they balance equations. Balancing equations will be an integral part of chemistry for the remainder of the course. Be sure you fully understand the process.
All atoms appearing in the product originally came from the reactants. What does this statement mean?
What does diatomic mean?
List three examples of a diatomic molecule.
4H2O- which number is the coefficient and which is the subscript?
What do chemists mean by a formula unit?
A.5 Resources and Waste
Define the terms:
Resource
Renewable resource
Nonrenewable resource
Waste
Recycling
What is the difference between trash and pollution?
What is meant by "resources out of place"?
Using and producing resources creates waste along with vast quantities of discards. What does this statement mean?
A.6 Disposing of Things
List two examples of recycling
What is a waste to energy plant?
What makes up the largest portion of the waste stream?
How much of the waste stream is recovered? Converted to energy?
Lecture
What are household hazardous wastes?
List at least two examples of household hazardous wastes
What is done with hazardous waste in PBC?
What is the state mandated recycling level?
What is PBC current level of recycling?
RESOURCES B READING GUIDE
B.1Properties Make the Difference
Define:
Physical properties
Chemical properties
Physical change
Chemical change
Compare and contrast physical and chemical properties.
Compare and contrast physical and chemical change.
These will be essay questions on the test.
Give 2 examples of each of the following:
Physical properties
Chemical properties
Physical change
Chemical change
B.2 The Chemical Elements
Memorize the common elements and their symbols on page 105, table 1.
What are metals, nonmetals and metalloids? Give three examples of each.
B.3 Metal, Nonmetal?
Compare and contrast malleable and brittle. Give an example of each.
Define luster,
conductor and nonconductor and give an example of each.
B.4 The Periodic Table
Who was Mendeleev and what was his contribution to science?
Why was the development of the periodic table important?
What is atomic mass and where can you find an element's atomic mass?
What is combining capacity?
B.6 The Pattern of Atomic Numbers
What is atomic number and where can you find an element's atomic number?
How does atomic number relate to number of electrons in an element?
Describe periods, groups and families on the periodic table.
What is meant by periodic law?
What are noble gases and where are they on the periodic table? What do they have in common (besides being gases)?
Words to remember!
The arrangement of elements in the periodic table provides an orderly summary of the key characteristics of elements. If we know the major properties of a certain chemical family, we can predict some of the behavior of any element in that family.
B.7 Chemical Reactivity
We can compare the reactivities of elements by observing the relative ease with which different metals combine with oxygen. Contrast the use of gold, iron and magnesium.
B.8 Metal Reactivities
Different metals have varying degrees of reactivity.
What is an activity series?
What is meant by an uncombined or free state in nature?
B.9 What Determines Properties
What causes differences in reactivity?
How are the properties of elements determined by the internal structure of their atoms?
How does the internal structure influence reactions, attractions between atoms and physical properties such as conductivity and melting point?
What is the major difference noted between metals and nonmetals?
B.10 Modifying Properties
Define alloy
What is the difference between physically blending and chemically combining substances?
B.11Restoring Miss Liberty
Define Corrosion and Patina
What happens when different metals contact each other in the presence of moisture?
Questions? Comments??