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example of diatomic molecule
O2- Requires two of the molecule to represent a gaseous form.
Oxygen gas and Hydrogen Gas react to produce liquid water. Write a balanced
equation.
O2+2H2-->2H2O
Solid copper reacts with solid sulfur to form solid copper (I) sulfide. Write a
balanced chemical equation.
2Cu+S-->Cu2S
Solid iron (III) oxide reacts with Hydrogen Gas to form solid iron and liquid water.
Fe2O3+3H2-->2Fe+3H2O
What is a cation?
A positively charged ion (Metals)
What is a anion?
A negatively charged ion (Non-metals)
Group 1 always has a charge of
+1
Group 2 always has a charge of
+2
Group 17 always has a charge of
-1
Group 16 always has a charge of
-2
Group 15 always has a charge of
-3
Transition metals can have
multiple charges (+2, +3)
Ag always has a charge of
+1
Zn always has a charge of
+2
Cd always has a charge of
+2
Al always has a charge of
+3
Name the chemical formula. (NaO)
sodium oxide
Name the chemical formula. (CaCl)
calcium chloride
Name the chemical formula. (AlS)
aluminium sulfide