Chapter 2, Problem 2.69E

Describe how a homogeneous mixture differs from a heterogeneous mixture.

How does an element differ from a compound? How are they similar?

(For Exercises 4546) Solutions containing nickel(II) ion are usually bright green in color. When potassium hydroxide is added to such a nickel(II) solution, a pale-green fluffy solid forms and settles out of the solution. The fact that a reaction takes place when potassium hydroxide is added to a solution of nickel(II) ions is an example of a properly. . The fact that a solution of nickel(II) ion is bright green is an example of a property.

Iced Tea Use iced tea with and without ice cubes as examples to explain homogeneous and heterogeneous mixtures. If you allow all of the ice cubes to melt, what type of mixture remains?

How do molecules of elements and molecules of compounds differ? In what ways are they similar?

Look at Table 2.8 in your text. How do the densities of gases, liquids, and solids compare with one another? Use microscopic pictures to explain why this is true.