Predict the flame colors of the following substances

Predict the flame colors of the following substances: Potassium phosphate, K 3 PO 4 Sodium phosphate, Na 3 PO 4 Answer: K 3 PO 4 = purple/lilac Na 3 PO 4 = yellow/orange

Provide the following information about magnesium: The number of electron shells, the total number of electrons, the number of valence electrons Answer: 12 total electrons 3 electron shells 2 valence electrons

For Mg. SO 4 (s): What type of bonding holds this compound together? Will the substance dissolve in water? Will it conduct electricity when dissolved? Answer: Ionic (metal and nonmetal) Dissolves Conducts when dissolved

Write down the following information for the compound sodium bromide: cation, and the chemical formula Cation = Na+ Anion = Br – Formula = Na. Br Name = sodium bromide

Write down the following information for the compound aluminum nitride: cation, anion, chemical formula Cation = Al 3+ Anion = N 3 Formula = Al. N Name = aluminum nitride

Write down the following information for the compound strontium bromide: cation, anion, chemical formula Cation = Sr 2+ Anion = Br 1 Formula = Sr. Br 2 Name = Strontium bromide

Predict the flame colors of the following substances: Copper hydroxide, Cu(OH)2 Strontium hydroxide, Sr(OH)2 Answer: Copper = green Strontium = red

Provide the following information about nitrogen: The number of electron shells, the total number of electrons, the number of valence electrons Answer: 7 total electrons 2 electron shells 5 valence electrons

Name two elements that have similar properties to the element neon. Why do they have similar properties Answer: Any noble gas All have 8 valence electrons

What type of bonding holds C 2 H 6 O (l) together? Will the substance dissolve in water? Will it conduct electricity when dissolved? Answer: Molecular covalent Dissolves in water Does not conduct when dissolved

Write down the following information for the compound lithium nitride: cation, anion, chemical formula and name. Answer: Cation = Li + Anion = N 3 Formula = Li 3 N Name = Lithium nitride

Write down the following information for the compound iron (II) hydroxide: cation, and chemical formula Answer: Cation = Fe 2+ Anion = OH – Formula = Fe(OH)2

How is a polyatomic ion different from a regular ion? Answer: Polyatomic ions are made of more than one element

A mystery substance does not dissolve in water but does conduct electricity as a solid. What type of bonding does it have? Answer: Metallic

For the following cation and anion: Mn 2+ and PO 43 -, write the chemical formula and name the compound. Answer: Name = Manganese phosphate Formula = Mn 3(PO 4)2

What is an ion? Answer: An element that lost or gained electrons to have a + or - charge

Bromine gains 1 electron to become like krypton. Why doesn’t it actually become krypton? Answer: Bromine still has 35 protons

What is the cation, anion and chemical formula for manganese (III) sulfate? Mg = 3+ SO 4 = 2 Formula = Mg 2(SO 4)3