Chapter 5 Flashcards
What are molecular elements?
Diatomic elements -exist in nature as compounds
HONCLBRIF
What are atomic elements?
Elements that exist in nature as elements
What’s a molecular compound?
All nonmetal
What’s a ionic compound?
Metal + nonmetal
How do you write ionic formulas? (4 steps)
1) determine charges
2) if they have the same absolute value, they each get one atom.
3) if they are not equal, cross multiply to make the charge neutral.
4) smallest # ratios
How do you name binary compounds using IUPAC?
Name of metal- base name of nonmetal- ide
How do you name compounds when the elements have multiple possible charges?
Show charges with Roman numerals. Use rules from IUPAC
Cu+1 is called?
Cuprous.
What’s cu+2 called?
Cupric
Fe+2 is called?
Ferrous
Fe+3
Ferric
What’s it called when you combine two compounds?
Oxyanions or poly atomic ions
NH4+1 is?
Ammonium
NH3-1 is?
Ammonia
C2H3O4 is?
Acetate