Oyster Unit

Which of the following pH numbers indicates a neutral substance?

• 1

• 5

• 7

• 14

Which of the following pH numbers indicates a strong acid?

• 3

• 5

• 7

• 14

When dissolved in water, acids produce:

• bases

• salts

• hydrogen (H+) ions

• hydroxide (OH-) ions

When solutions of two ionic compounds are combined and a solid forms, the process is called

• hydration

• solvation

• dissociation

• precipitation

Select ALL that are TRUE about Calcium Carbonate

• The chemical formula is CaCO3

• Another name for calcium carbonate is oyster shell

• Calcium carbonate dissolves in acid

• Calcium carbonate easily dissolves in water

A temperature increase causes particles to...

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

What does NOT happen when the temperature is increased?

• particles collide more often

• particles collide with more energy

• particles move faster

• particles react at a slower rate

Tags

NGSS.HS-PS1-5

Why does a higher concentration increase the rate of reaction

• it increases the amount of reactants

• it lowers the activation energy

• it increases the energy of particle collisions

• it increases the frequency of particle collisions

Tags

NGSS.HS-PS1-5

Hydrogen ions form with water to produce H₃O⁺ ions, known as...

• neutrons

• hydroxide

• electrons

• hydronium

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH-) ions?

• below 7

• 7

• above 7

• 0-14