Thermodynamics Chemistry

Is the reaction from ATP to ADP exergonic or endergonic?

• Exergonic

• Endergonic

Tags

NGSS.HS-PS1-4

The energy held between bonds of atoms & is released when the bond is broken.

• energy

• kinetic energy

• potential energy

• chemical energy

Tags

NGSS.HS-PS1-4

The law of conservation of energy; total amount of energy in the universe is constant and be neither created or destroyed.

• First Law of Thermodynamics

• Second Law of Thermodynamics

Energy cannot be changed without a loss of useable energy (heat) .

• First Law of Thermodynamics

• Second Law of Thermodynamics

Tags

NGSS.HS-PS3-4

releases energy (occurs spontaneously)

• metabolism

• endergonic reaction

• exergonic reaction

• photosynthesis

Tags

NGSS.HS-LS1-7

absorbs energy(nonspontaneous)

• metabolism

• endergonic reaction

• exergonic reaction

• photosynthesis

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Use the diagram to answer the question. Between which parts of the molecule must the bonds be broken to form an ADP molecule?

• A and B

• A and C

• B and C

• C and D

Tags

NGSS.HS-PS1-2

Which of the following types of reactions would decrease the entropy within a cell?

• digestion

• catabolic reactions

• anabolic reactions

• respiration

When this reaction occurs, 75.0 kJ of energy is released. What mass of copper is produced?

• 0.588 g

• 36.7 g

• 110 g

• 1.73 g

Answer explanation

1 mol of copper is produced for every 129.7 kJ of energy that is released by this reaction. Using this as a conversion factor, one finds that 0.588 mol of copper should be produced. Multiply by 63.55 g/mol, copper's molar mass, to find 36.7 g of copper is produced.

Tags

NGSS.HS-PS1-4

Which of the following statements is true regarding the following reaction?

• The reaction will cause the surrounding's temperature to increase because the reaction is exothermic.

• The reaction will cause the surrounding's temperature to decrease because the reaction is exothermic.

• The reaction will cause the surrounding's temperature to increase because the reaction is endothermic.

• The reaction will cause the surrounding's temperature to decrease because the reaction is endothermic.

Answer explanation

When enthalpy (ΔH) is negative, this indicates the reaction is exothermic. Therefore, the reaction will release energy to the surrounding causing the temperature to increase.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4