A statement that consistently and correctly explains a natural phenomenon is

a. a hypothesis.

b. a theory.

c. an observation.

d. a control.

Respond: How d id you feel about Mr. Gradgrind' s theory of education ?

Using complete sentence, answer the following question.
What is the theory underlying Maslow's hierarchy of needs?

Use VSEPR theory to predict the geometric shapes of the following molecules and ions:

$\mathrm{SOCl}_2$:

Most metals are shiny, that is, they reflect light. How does the bonding theory for metals explain this characteristic?

Use Lewis theory to determine the formula for the compound that forms from:

(d) $\mathrm{Ba}$ and $\mathrm{F}$

Explain how the nebular theory accounts for the differences in the composition of the inner planets as compared to the outer planets.

Using the VSEPR theory, predict the molecular structure of the following polyatomic ions.

c. perchlorate ion

How does the kinetic-molecular theory help us understand the temperature dependence of chemical reactions?

Use the kinetic-molecular theory to explain why gases are easier to compress than liquids or solids.

Use Lewis theory to determine the formula for the compound that forms from:

(b) $\mathrm{Mg}$ and $\mathrm{Br}$

Use the kinetic-molecular theory to explain why gases are easier to compress than liquids or solids.

According to the Big Bang theory, how large was the universe before it exploded and expanded in all directions?

What is the theory of liquidity preference? How does it help explain the downward slope of the aggregatedemand curve?