Water Systems and Chemistry Quiz

What is the prime resource of man's food supply and his most important household and industrial tool?

• Air

• Water

• Food

• Plants

What is the major constituent of all living matter?

• Air

• Water

• Food

• Plants

What is the definition of an inorganic compound?

• A chemical substance of mineral origin having carbon in its molecular structure

• A chemical substance of animal or vegetable origin having carbon in its molecular structure

• A chemical substance of mineral origin not having carbon in its molecular structure

• A chemical substance of animal or vegetable origin not having carbon in its molecular structure

What is the definition of an acid?

• A substance that releases hydrogen ions (H+) when it is mixed into water

• A substance that produces hydroxide ions (OH-) when it dissociates in water

• A measurement of how acidic or basic a substance is

• A chemical substance of mineral origin not having carbon in its molecular structure

What is the definition of a base?

• A substance that releases hydrogen ions (H+) when it is mixed into water

• A substance that produces hydroxide ions (OH-) when it dissociates in water

• A measurement of how acidic or basic a substance is

• A chemical substance of mineral origin not having carbon in its molecular structure

What is the pH scale used for?

• Measuring the concentration of hydrogen ions in a substance

• Measuring the concentration of hydroxide ions in a substance

• Measuring the acidity or basicity of a substance

• All of the above

What color does litmus paper turn when in contact with an acid?

• Red

• Blue

• Colorless

• Yellow

What color does phenolphthalein turn when in contact with an acid?

• Red

• Blue

• Colorless

• Yellow

What is the primary risk associated with radium in drinking water?

• Developmental problems

• Non-hereditary birth defects

• Genetic effects

• Bone cancer

What is the effect of a substance with a high pH level on the human body?

• It can cause skin irritation and eye damage

• It can cause dehydration

• It can cause high blood pressure

• It can cause low blood pressure