Chem I Friday Test - Water & Aqueous Solutions

Front

What are hydrogen bonds?

Back

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule.

Front

What is a solute?

Back

A compound that is being dissolved in a solution.

Front

Define intermolecular forces.

Back

Forces between molecules.

Front

What is the solid state of a substance characterized by?

Back

A fixed arrangement of molecules that are closely packed together.

Front

How do you calculate the percent water by mass in a compound?

Back

(Mass of water in the compound / Total mass of the compound) x 100.

Front

What is a solvent?

Back

The substance that dissolves a solute in a solution.

Front

What is a solution?

Back

A homogeneous mixture of two or more substances.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the role of water in biological systems?

Back

Water acts as a solvent, a temperature buffer, and is essential for biochemical reactions.

Front

What is the significance of water's polarity?

Back

Water's polarity allows it to dissolve many substances, making it a universal solvent.