Which correctly describes the smallest amount of an element?

• Atom

• Molecule

• Compound

• Proton

How would H2O be classified? Check all that apply.

• Atom

• Molecule

• Compound

Tags

NGSS.MS-PS1-1

How would O2 be qualified. Check all answers that apply.

• Atom

• Molecule

• Compound

Tags

NGSS.MS-PS1-1

Which of the following is NOT a rule for matter?

• All matter is made of atoms

• Atoms bond to other atoms to form compounds

• Atoms are on the macro scale

• Atoms last forever

What does conservation of matter mean?

• Matter cycles through an ecosystem and 10% is lost as you move through each trophic level.

• Matter cannot be created, but can be destroyed.

• Matter cannot be created nor destroyed, and cycles through ecosystems.

• Matter and energy both move through ecosystems with 100% efficiency.

Tags

NGSS.MS-LS2-3

NGSS.MS-PS1-5

How is matter recycled in ecosystems?

• Matter can take on different forms as it goes through different processes.

• Matter moves through ecosystems through biogeochemical cycles.

• Matter is recycled as organisms in different trophic levels consume and finally when decomposers return matter to the ecosystem.

• All of these are true.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Animals take in energy as __________ and convert it to ________, the energy cells can use.

• Fat, ADP

• Fat, ATP

• Glucose, ADP

• Glucose, ATP

Tags

NGSS.MS-LS1-7

What is an element?

• A pure substance that cannot be broken down.

• Two atoms bonded together.

• Two or more different types of atoms bonded together.

• An molecule with an unequal distribution of charge.

Tags

NGSS.MS-PS1-1

What are atoms composed of?

• Protons and electrons.

• Protons, neutrons, and electrons.

• Neutrons and electrons.

• Ions, elements, and compounds.

Tags

NGSS.MS-PS1-1

What is matter?

• Matter has mass and takes up space.

• Matter is charged atoms.

• Matter has a charge and a mass.

• Matter is polar molecules.

Tags

NGSS.MS-PS1-1