Chemistry Chapter 5
How many chloride ions are needed to stabilize the 2+ charge of magnesium in the compound magnesium chloride?
2 chloride ions are needed.
Are ionic compounds hard and brittle or soft and malleable?
Ionic compounds are hard and brittle and they can be smashed into little pieces.
What are ionic compounds?
Ionic compounds are made of metal cation(s) and non-metal anion(s) bonded together with ionic bonds.
What kind of structure do ionic compounds take at solid state?
Ionic compounds take a crystal structure.
What are multivalent ions?
Multivalent ions are ions of metals that can have different charges when present in an ionic compound.
Of the compounds NaCl, H2O, CH4, HCl, FeSO4 which is an univalent ionic compound?
NaCl is the only univalent ionic compound here.
What is the chemical formula of aluminum acetate?
The chemical formula is Al(C2H3O2)3.
What is the chemical formula of aluminum oxide?
The chemical formula is Al2O3.
What is the chemical formula of sodium phosphate?
The chemical formula is Na3PO4.
What is the chemical formula of tin (IV) chloride?
The chemical formula is SnCl4
What is the chemical name of Be(OH)2?
The chemical name is beryllium hydroxide
What is the chemical name of Ca3N2?
The chemical name is calcium nitride.
What is the chemical name of CuBr2?
The chemical name is copper (II) bromide
What is the chemical name of PbO2?
The chemical name is lead (IV) oxide
What is the chemical name of the compound with the formula KCl? Is it potassium chlorate, chloride potassium, chlorate potassium, or potassium chloride?
The chemical name is potassium chloride.
Find the multivalent ionic compound(s) in the following and name its charge: CaC2O4, CH3CH2CH3, CuO, CdCO3
The multivalent ionic compound is CuO (Copper (II) oxide), and the copper's charge is 2+
What is the only polyatomic ion with a positive charge?
The polyatomic ion is ammonium, or NH4+.
Do ionic compounds have high or low melting and boiling points?
They have high melting and boiling points.
Name 2 multivalent elements have the charges of 2+ and 4+?
Manganese, platinum, tin, lead, and polonium have the charges of 2+ and 4+.
What is the state of most ionic compounds at room temperature?
Most ionic compounds are solid at room temperature.
Is dinitrogen disulfate a polyatomic ionic compound? Why or why not?
No, because nitrogen is a not a metal and sulfate is polyatomic ion, so dinitrogen disulfate is a polyatomic molecular compound.
Do ionic compounds conduct electricity?
Not when solid, but when dissloved in water, they readily conduct electricity.
What are polyatomic ions and why are they important in ionic compounds?
Polyatomic ions are ions that are a group of atoms bonded to each other that act as one single ion.
