Mass Relationships

Which is true of the reaction shown below?

• Two molecules of Substance Y will be left over when this reaction goes to completion.

• Substance Y is the limiting reagent in this reaction.

• The addition of more molecules of Substance X will not affect the amount of Substance Z that can be made.

• The mole ratio of this reaction is 6:5:6.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

• 1 : 1

• 2 : 3

• 1 : 3

• 1 : 2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which level would have the most biomass?

• Producers

• Primary consumers - herbivores

• Secondary consumers- carnivores

• Quaternary consumers- Apex Predators

Tags

NGSS.MS-LS2-3

Which level would have the least biomass?

• Producers

• Primary consumers - herbivores

• Secondary consumers- carnivores

• Quaternary consumers- Apex Predators

Tags

NGSS.MS-LS2-3

What is the difference between a Trophic Pyramid and Food Web?

• A Trophic Pyramid shows the energy & mass available, but the food web shows directly who eats who.

• A food web shows the mass & energy available, but the Trophic Pyramid shows directly who eats who.

• A food web is so pretty to look at.

• A trophic pyramid is so beautiful.

Tags

NGSS.MS-LS2-3

The piece of wood shown above has a mass of 20 grams. Calculate its density.

• 0.67 g/cm3

• 30 g/cm3

• 10 g/cm3

• 1.5 g/cm3

The amount of matter an object contains is called _____.

• volume

• mass

• density

• gram

The basic SI unit of mass is the _____.

• weight

• kilogram

• volume

• density

The mass per unit volume of a material is its _____.

• density

• volume

• mass

• weight

Which of the following is the law that states that mass is neither created nor destroyed in a chemical reaction?

• Law of Definite Proportions

• Law of Conservation of Mass

• Law of Multiple Proportions

• Law of Constant Composition

Tags

NGSS.MS-PS1-5