Misc.
How much numbered groups are there in the periodic table?
Eighteen
What is a chemical reaction?
A change in chemical structure.
What is a molecular compound?
A compound made up of non metal atoms where they share electrons.
What is an ionic compound?
A compound consisting of a metal atom that loses electrons and a non metal atom the gains electrons.
What is a polyatomic ion?
A compound that has an electric charge but consists entirely of non metal atoms.
How do you draw a Lewis dot diagram?
The elements abbreviation surrounded by it's valence electrons in the form of dots or x's.
How do you write a chemical reaction in words?
The reactants written out by name with a plus sign separating them, an arrow separating the reactants from the product with a delta over the arrow if heat was used, and the products written out by name with a plus sign separating them.
How do you draw a molecular bond?
Representations of atoms connected to each other using circles that only enclose the electrons shared by the elements.
how do you draw an ionic bond?
The representations of the atoms (make sure to add or take electrons depending on how much were lost or gained) with the charge of the elements to the right and then enclosed with square brackets.
How do you express multiple polyatomic ions in a compound? (e.g. 2 nitrate ions)
The polyatomic ion enclosed in brackets with a subscript outside of the brackets on the right.
What type of compound would carbon dioxide be?
An Molecular compound
What type of reaction would
Copper (s) + Oxygen (g) ---> Copper Oxide (s)
be?
Synthesis
Do molecular compounds have a charge?
Molecular compounds do not have a charge
What charge would a lead atom have in a
lead (iv) sulfide atom?
The lead atom would have a charge of 4+.
What charges can a polyatomic ion have?
A polyatomic ion can have:
1+, 1-, 2-, & 3-.
What type of compound would potassium chlorate be?
An Ionic compound
What type of reaction would
FeS + HCl ---> FeCl2 + H2S
be?
Double Displacement
Is NH3 a molecular compound?
NH3 is a molecular compound
Is Mg(OH)2 an Ionic Compound?
Mg(OH)2 is an ionic compound
what type of polyatomic ions is ammonium?
Ammonium is a cation.
and acid is also acceptable.
How much sulfur atoms would be needed to combine with aluminum?
Three sulfur atoms.
What would the incomplete combustion of methane look like as a balanced equation?
2CH4 + 3O2 ---> 2CO + 4H2O
Is SiO2 a molecular compound?
Yes. Even though they aren't both non metals and silicon has a postive charge SiO2 is a molecular compound.
can an ionic compound have a charge?
No. An ionic compound can not have a charge but, the elements forming the compound can have a charge.
E.g. NaCl doesn't have a charge but Na and Cl by them selves have a charge (Na+ and Cl-).
what type of polyatomic ion is CH3COOH?
CH3COOH is an acid.