IP: Endothermic and Exothermic Reactions

The minimum energy particles must have to react is the

• acting energy

• active energy

• activation energy

A reaction profile shows....

• the relative difference in temperature of reactants and products

• the relative difference in amounts of reactants and products

• the relative difference in energy of reactants and products

• the relative difference in volume of reactants and products

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Bond making is

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

Which letter shows the heat change?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS3-4

Which letter represents the reactants?

• A

• B

• C

• D

• E

Which letter represents the products?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4

What type of reaction occurs in a hand warmer?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Which of the following process is exothermic?

• Candle was melting

• A puddle evaporating

• Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide

• Water freezing to form ice

ΔH value in an endothermic reaction is a positive number.

• True
• False

Define 'Enthalpy'

• a) Energy stored in the movement of molecules in a substance
• b) The opposite of temperature
• c) The temperature of a molecule
• d) Energy stored in the chemical bonds in a substance

Tags

NGSS.HS-PS1-4