Calorimetry Lab Alt

What happens when hydrochloric acid (HCl) and sodium hydroxide (NaOH) are mixed together?

• They undergo a neutralization reaction forming salt and water.

• They travel through time.

• Nothing happens.

• They explode.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is released during the neutralization reaction between hydrochloric acid and sodium hydroxide?

• Light

• Cold air

• Heat

• Electricity

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What is the role of a calorimeter in a chemical experiment?

• To measure the volume of a solution

• To measure the change in heat associated with a chemical reaction

• To mix chemicals together

• To cool down reactions

Tags

NGSS.HS-PS3-4

What does the specific heat capacity of a substance indicate?

• The amount of heat a substance can produce

• The temperature increase when a substance is heated for one minute

• The amount of substance needed to raise the temperature of water by 1 degree Celsius

• The amount of heat needed to raise the temperature of one mass unit of the substance by 1 degree Celsius

Tags

NGSS.HS-PS3-4

Why is water particularly noted for its high specific heat capacity?

• Because it can absorb a lot of heat without a significant change in temperature

• Because it releases heat very quickly

• Because it changes state at room temperature

• Because it is a universal solvent

Tags

NGSS.HS-PS3-4

What is Hess's Law primarily concerned with?

• The speed of a chemical reaction

• The initial and final states of a chemical reaction

• The color change in a chemical reaction

• The pathway a chemical reaction takes

What does the change in enthalpy (ΔH) represent in a chemical reaction?

• The change in volume

• The change in pressure

• The heat absorbed or released

• The change in color

Tags

NGSS.HS-PS1-4

Why might the calorimetry results differ from the calculated values using Hess's Law?

• Because the temperature was constant

• Because of the specific heat capacity of pure water used instead of salt water

• Because the reaction did not occur

• Because no heat was released during the reaction

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What is the main purpose of insulation in a calorimeter?

• To minimize the amount of heat that leaks in or out

• To cool down the reaction

• To change the color of the reaction

• To speed up the reaction

What does the specific heat capacity of water tell us?

• Water can freeze instantly

• Water requires a lot of thermal energy to raise its temperature

• Water is not a good solvent

• Water can produce heat without any chemical reaction