VP #1: Acids, Bases, Salts

A positive ion is also known as a _______?

• anion
• neutron
• electron
• cation

The atoms in a water molecule share electrons in a ________________?

• ionic bond
• hydrogen bond
• metallic bond
• covalent bond

What does the double arrow in the chemical equation mean?

• It signifies a reversible reaction.
• It represents a one-way reaction.
• It shows the reaction is exothermic.
• It indicates a catalyst is present.

What is the charge of the ions formed when water molecules disassociate?

• Positive and negative

• Only positive

• Only negative

• Neutral

How is the strength of an acid measured?

• The strength of an acid is measured by the amount of ions that can be found when in solution.

• The strength of an acid is assessed by its viscosity.
• The strength of an acid is determined by its boiling point.
• The strength of an acid is measured by its color intensity.

What happens to hydrochloric acid when it is added to water?

• It remains unchanged

• It evaporates

• It disassociates into ions

• It forms a solid

What does pH stand for?

• power of Helium
• potential of Hydrogenation
• pressure of Helium
• power of Hydrogen

How does the pH scale measure a solution?

• By its smell

• By the concentration of hydrogen ions

• By its temperature

• By its color

What is the pH level of pure water?

• 14

• 3

• 7

• 5

What is formed when an acid reacts with a base?

• A metal

• A salt and water

• A gas

• A polymer