Quiz Conservation of Mass

Which equation below best represents the information?

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Using the equation 2AgI + Na₂S --> Ag₂S + 2NaI

classify each portion of the equation as either a reactant or a product?

Groups:

(a) Reactant

,

(b) Product

,

(c) Yields

• 2NaI

• 2AgI

• -->

• Na₂ S

• Ag₂S

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Which character is the coefficient of the chemical equation?

In the equation, which character means yields or produces?

Tags

NGSS.HS-PS1-7

Which statement best describes the law of conservation of mass?

• The energy in a system never changes.

• A reaction can destroy matter.

• Matter can be neither created nor destroyed.

• The mass of a system will always remain the same.

Tags

NGSS.HS-PS1-7

What coefficient correctly balances this equation?

Fe₂O₂ + H₂ --> _?_Fe + 2H₂O

• 1

• 2

• 3

• 4

Analyze the equation for photosynthesis shown below. Which of the following statements is TRUE?

• Light is a product in photosynthesis.

• The chemical reaction of photosynthesis produces glucose.

• Water and carbon dioxide are products of photosynthesis.

• During photosynthesis, atoms of oxygen are destroyed.

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5

What process do all organisms use to obtain energy from sugar?

• photosynthesis

• atom inventory

• homeostasis

• cellular respiration

Tags

NGSS.HS-LS1-7

How are the equations for photosynthesis and cellular respiration related to each other?

• The products of photosynthesis are the reactants of cellular respiration.

• Animals perform both photosynthesis and cellular respiration.

• Both chemical reactions require sunlight.

• The reactants of photosynthesis are the same as the reactants for cellular respiration.

Tags

NGSS.HS-LS2-5