Thermochemistry

The average kinetic energies of the molecules in two samples of gas could best be compared by measuring their

• temperatures

• volumes

Tags

NGSS.HS-PS3-4

According to the Law of Conservation of Energy, when energy is changed from one form to another,

• all matter is conserved (kept)

• all matter is lost (destroyed)

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

The study of changes in heat energy that accompany chemical reactions and physical processes is called

• thermochemistry

• standard enthalpy change

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

If heat is released by a chemical system, an equal amount of heat will be

• absorbed by the surroundings

• released by the surroundings

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

The reaction that takes place inside a “cold pack” when it is used to treat athletics is endothermic.

• True

• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

The energy stored in the chemical bonds of a substance would be classified as potential energy.

• True

• False

Tags

NGSS.HS-PS1-4

The reactions that break down food in your body and turn it into energy to fuel work are endotheric.

• True

• False, they are exothermic.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Heat is transfered due to temperature difference.

• False

• True

Tags

NGSS.HS-PS3-4

What would likely happen if you were to touch the flask in which an endothermic reaction were occurring?

• It would feel cold

• It would feel warm.

Tags

NGSS.HS-PS1-4

The amount of heat required to raise the temperature of 1 gram of water by 1°C is known as (choose the BEST answer!)

• Calorie

• Thermodynamics

Tags

NGSS.MS-PS3-4