Test

Water is a _________ molecule.

• nonpolar

• polar

Chose all the answers that have kinetic energy:

• A ball moving through the air

• A ball sitting on the edge of a table

• A child swimming

• A pendulum swinging

In what situation can energy be created or destroyed?

• In a nuclear reaction

• During photosynthesis

• When work is done

• Never

Identify the biomolecule

• Lipid
• Protein
• Carbohydrate
• Nucleic Acid

What is energy?

• Anything that has the ability to work and to transform.

• Anything that has mass and volume.

• Anything that has speed and distance.

• Anything that has force and weight.

Which of the following are in the correct order of nitrifying bacteria in the nitrogen cycle?

• Nitrobacter, Nitrosomonas

• Nitrosomonas, Nitrobacter

How many neutrons are found in an oxygen (O) atom?

• 8

• 15

• 16

• 24

NH³ is the chemical formula for which nitrogen compound?

• Ammonia

• Nitrite

• Nitrate

What instrument is used to measure density/specific gravity?

• sainometer

• capacitor

• hydrometer

• filter

NO³ is the chemical formula for which compound in the nitrogen cycle?

• Ammonia

• Nitrite

• Nitrate