chem1to10.py

Created by thabo
Created on January 06, 2025
1.63 KB
"""
1. The nonmetals in Groups 6A 
and 7A have a numerical charge
that is found by subtracting (8)
from the group number
  To find the charge of groups 5A-7A
  you must subtract 8

2. A (metal) when combined
with fluorine, would form an
ionic compound?
  Metals typically lose electrons to
  form positive ions (cations). 
  They combine with fluorine, 
  a nonmetal that gains electrons 
  to form negative ions (anions),
  resulting in an ionic compound.

3. Name PbO.
  Lead(II)Oxide
  PbO consists of lead (Pb) with a +2 oxidation 
  state and oxide

4. What is the correct formula
for potassium sulfite?
  K2SO3
  Potassium (K) has a +1 charge,
  and sulfite (SO3) has a -2 
  charge. Two potassium ions 
  are needed to balance one 
  sulfite ion.
  
5. The correct name of this 
compound, Cu3(PO4)2 is:
  Copper(II) phosphate
  Copper has a +2 charge in this 
  compound becuase they need to balance 
  the phoshpate ions which have -3 each
  
6. Corrosion control molecules,
such as orthophosphates, must
be added as a drinking water
treatment because they interact
with lead in the pipes to form
an (Insoluble) lead phosphate
lining that cannot leach into
the drinking water.

7. The formula for sodium
permanganate.
   NaMnO4

8. A formula unit of Copper 
(II) Phosphate consists of
(3)Copper ions and(2) phosphate
  ions.

9. List at least four effects 
of lead exposure on the body.
  Anemia, kidney damage, 
  nervous system damage, and 
  developmental delays in children.

10.Mg(OH)2 is an acid, base or
salt.
  Base
  Magnesium hydroxide (Mg(OH)2) 
  is a base because it can 
  dissociate in water to release
  hydroxide ions (OH−).
"""