2.4 Pre Assessment: Acids and Bases

What happens to ionically bonded substances when they are placed into water?

• they stay together

• they form ions

• they all mix together with the water

• nothing

released ions in water are called ions and sometimes this term

• electrolytes

• prototypes

• protons

• electrons

What happens to HCL when placed into water

• hydrogen ions are produced

• hydroxide ions are produced

• chloride ions are created

• both hydrogen ions and chloride ions are produced

Acids release this ion into a solution

• hydrogen ions

• hydroxide ions

• chloride ions

• nitrogen ions

Bases release this ion into a solution

• hydroxide ions

• hydrogen ions

• oxygen ions

• nitrogen ions

This scale is used to measure the hydrogen ion concentration in a solution

• pH

• ion

• molecular

• base

A solution that has a pH of 7 is considered an

• acid

• base

• neutral

• alkaline

A solution that contains more hydrogen ions than hydroxide ions is

• acidic

• basic

• neutral

• alkaline

A solution that contains fewer hydrogen ions than hydroxide ions is considered a

• base

• acid

• neutral

• natural

A solution with a pH of 4 is considered an

• acid

• base

• alkaline

• neutral