Conservation of Matter and Energy

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can both be created and destroyed

• energy can neither be created nor destroyed

Tags

NGSS.MS-PS3-5

According to the law of conservation of mass, matter cannot be created or ________

Tags

NGSS.MS-PS1-5

Matter ​ (a)   be created or destroyed. It can only ​ (b)  

• cannot

• change forms

• can

• be mixed

Tags

NGSS.MS-PS1-5

Conservation of energy states that energy cannot be ________ or ________, but can be altered from one form to another.

• created, destroyed

• gravity, force

• heat, created

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following is NOT part of the Law of Conservation of Matter?

• Matter cannot be created or destroyed

• Fire converts matter to heat

Tags

NGSS.MS-PS1-5

What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed

• Energy will decrease over time.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-2

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal

• 100 Kcal

Tags

NGSS.MS-LS2-3

Which of the following best describes the Law of Conservation of Matter?

• Matter can be created and destroyed

• Matter can change forms but cannot be created or destroyed

• Matter is always conserved in chemical reactions

• Matter can be converted into energy

Tags

NGSS.MS-PS1-5

In a closed system, if the total energy is 100 J at the beginning, what will it be after a series of energy transformations?

• 0 J

• 50 J

• 100 J

• 200 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

During a chemical reaction, the mass of the reactants is 50 grams. According to the Law of Conservation of Mass, what should be the mass of the products?

• 25 grams

• 50 grams

• 75 grams

• 100 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5