Investigation 5 Test

Front

Why do many substances dissolve in water?

Back

Water molecules have a polar structure.

Front

What does it mean when two liquids are soluble in each other?

Back

They are said to be miscible.

Front

What is the phase diagram?

Back

A graph showing the states of a substance at different temperatures and pressures.

Front

What is sublimation?

Back

The process of a solid changing directly to a gas.

Front

Why is water called the universal solvent?

Back

Due to the unequal sharing of electrons between oxygen and hydrogen.

Front

What is a polar molecule?

Back

A molecule with a partial positive charge on one side and a partial negative charge on the other.

Front

What is the triple point in a phase diagram?

Back

The point where all three phases (solid, liquid, gas) coexist in equilibrium.

Front

What are dispersion forces?

Back

Weak intermolecular forces that arise from temporary dipoles in molecules.

Front

What is miscibility?

Back

The ability of two substances to mix in all proportions without separating.

Front

What is the significance of hydrogen bonds in water?

Back

They contribute to water's high boiling point and surface tension.