S1-Q2- Thermochemistry Exo/Endo

In an exothermic process the surrounding looses heat. 

• True
• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Is the combustion of gasoline endothermic or exothermic?

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

Refer the the following reaction:

2N₂ + 3H₂ --> 2NH₃ + 46 kJ

How much energy would be produced if only 1 mol of nitrogen was reacted?

• 92 kJ

• 0.143 kJ

• 23 kJ

• 15 kJ

Do the reactants in an exothermic reaction have a higher or lower energy than the products?

• Higher
• Lower

Tags

NGSS.HS-PS1-4

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C
• 24.12°C
• 351 °C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What kind of graph is this?

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

Which of the following is an endothermic process?

• solid to gas
• liquid to solid
• solid to liquid
• gas to liquid

Tags

NGSS.MS-PS1-4

How much heat does an aluminum block absorb if 10.00 grams ae heated from 25.0^oC to 50.0^oC? the specific heat of aluminum is 0.9J/g^oC

• 450

• -450

• 225

• -225

The prefix "exo" means

• "in"

• "out"

• "up"

• "down"