U1 L28: Good As Gold
11/24
• 1. List four ways a copper atom and a gold
atom are different from each other.
• 2. What are the various parts of the atom?
Briefly describe each one.
• 4. Draw a basic atomic model of each of these atoms:
silicon, boron, fluorine, and potassium. How many core
and valence electrons does each one have?
• 5. Write down at least five things you can
figure out about MgCl2 just from knowing its
formula.
• 8. Explain what an isotope is.
9. Write one possible isotope for each of these
elements:
• sulfur, S
• zinc, Zn
• beryllium, Be
• mercury, Hg
• 13. Explain how ionic compounds are formed.
• 15. Making Sense Elements are made up of
atoms, but atoms are not made up of
elements. Explain what this statement means.
• 16. If You Finish Early Why isn’t it practical to
try to make gold from other substances?