Journal Entry:

List the following ions from strongest to weakest in their attraction for water and explain why. Cu⁺², Fe⁺², Sr⁺² 

Learning Intentions

• You will understand precipitation reactions, learn how to write net ionic equations for such reactions and be able to identify the spectator ions in the reaction.

• You will learn how to draw a particulate representation of a precipitation reaction.

• You will learn how to write a balanced net ionic equation for a chemical reaction they observe.

Closing Task:

You can predict whether the mixing of two aqueous solutions will result in a chemical reaction and write a net ionic equation to represent the reaction when it does.

Content Standards being covered:

Dipole forces result from the attraction among the positive end and negative ends of polar molecular. Hydrogen bonding is a strong type of dipole-dipole force that exists when very electronegative atoms (N, O, and F) are involved. (EK 2.B.2)

The atom is composed of negatively charged electrons, which can leave the atom, and a positively charge nucleus that is made of protons and neutrons. The attraction of the electrons to the nucleus is the basis of the structure of the atom. Coulomb's law is qualitatively useful for understanding the structure of the atom. (EK 1.B.1)

The solubility of a substance can be understood in terms of chemical equilibrium (EK 6.C.3)