The Chemistry of Life Quiz

In the atom, which particles are in constant motion around the nucleus?

• protons

• protons and neutrons

• neutrons

• electrons

How do the properties of sodium chloride (NaCl) compare with the properties of its component elements, sodium (Na) and chlorine (Cl)?

How do the isotopes of an element differ?

Describe the electric charges of the three main subatomic particles.

When might van der Waals forces be strong enough to hold two molecules together?

How does the behavior of an electron change when it forms a covalent bond?

What are produced when a base is mixed with water?

• hydrogen ions

• hydroxide ions (OH)

• oxygen atoms

• oxygen ions

Which type of bonds hold two or more water molecules together?

What is the function of a buffer, such as bicarbonate ions in the blood?

What does the pH scale measure?