PS 2.2 Vocabulary

What is the term for a substance containing hydrogen that dissociates to form hydrogen ions when dissolved in water?

• Base

• Acid

• Buffer

• Alkaline

Which term refers to a basic reaction where the pH reading is above 7?

• Acid

• Alkaline

• Base

• Buffer

What is a substance that gives off hydroxyl ions when dissolved in water?

• Acid

• Base

• Buffer

• Nutrient

What is the purpose of a buffer in a solution?

• To increase acidity

• To resist change in pH

• To conduct electricity

• To supply nutrients

What is the property of conducting heat, electricity, or sound called?

• Conductivity

• Buffering

• Fertilization

• Ionization

Tags

NGSS.MS-PS3-3

What device is used to measure electrical conductivity?

• Conductivity tester

• pH meter

• Buffer solution

• Gypsum meter

In hydroponics, what is measured to determine the amount of nutrients available to a plant?

• pH level

• Electrical conductivity

• Ion concentration

• Base level

Tags

NGSS.MS-LS2-1

What is the lightest element that combines chemically with oxygen to form water?

• Hydroxyl

• Hydrogen

• Ion

• Lime

What is an element or compound in soil that is essential for plant growth called?

• Acid

• Base

• Nutrient

• Ion

Tags

NGSS.MS-LS2-1

What is the primary use of lime in agriculture?

• To increase soil acidity

• To amend acid soils

• To measure electrical conductivity

• To supply nutrients