Thermochemistry F5

What does it means with THERMOCHEMISTRY?

• Study of electrical energy in a chemical reaction

• Study of potential energy in a chemical reaction

• Study of heat energy in a chemical reaction

• Study of magnetic energy in a chemical reaction

When you hold an ice in your palm, the ice melts because

• You are hot

• Ice absorbs heat

• Ice release heat

What is exothermic reaction?

• Release heat to the surrounding

• Absorb heat from surrounding

What is endothermic reaction?

• Heat released to the surrounding

• Heat absorbed from the surrounding

What is the name of the reaction?

• Respiration

• Combustion

• Playing fire

• Photosynthesis

What type of reaction?

• Exothermic

• Endothermic

For exothermic reaction, temperature after the reaction is _______ than the temperature before the reaction

• equal

• higher

• lower

For endothermic reaction, temperature after the reaction is _______ than the temperature before the reaction

• equal

• higher

• lower

Which is not a bond in Chemistry?

• Ionic bond

• Covalent bond

• James bond

Heat is _________ when bond is broken

• Absorbed

• Released

• Sustained