Endothermic and exothermic

What term is given to a reaction which transfers heat energy to the surroundings?

• Endothermic

• Reversible

• Exothermic

• Exotermic

Tags

NGSS.HS-PS1-4

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

• Endothermic

• Decomposition

• Exothermic

• Indothermic

Tags

NGSS.HS-PS1-4

When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

• The solution at the end is acidic

• The reaction is reversible

• The reaction is exothermic

• The reaction is endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

if more heat energy is released in making bonds in the products than is taken in when breaking bonds in the reactants

• Exothermic

• Endothermic

• Exotermic

• Endotermic

Tags

NGSS.HS-PS1-4

if less heat energy is released in making bonds in the products than is taken in when breaking bonds in the reactants

• Endothermic

• Exotermic

• Exothermic

• Entrothermic

Tags

NGSS.HS-PS1-4

Is this diagram endothermic or exothermic

• Endothermic

• Exotermic

• Exothermic

• Endote

Tags

NGSS.HS-PS1-4

Examples of endothermic reactions

• Photosynthesis

• Ice melting

• Respiration

• Sodium carbonate + ethanoic acid

• Water + calcium oxide

Tags

NGSS.HS-PS1-4

NGSS.HS-LS1-5

This diagram is exothermic. Why?

• products are always at a lower energy compared to the reactants

• Products are always at a higher energy compared to the reactants

• Reactants are always the same as the products

• Whaaaaattttttttt?????

Tags

NGSS.HS-PS1-4

Examples of exothermic

• Acids + alkalis

• Cooking an egg

• Respiration

• Evaporating liquid water

Tags

NGSS.HS-PS1-4

NGSS.HS-LS1-7

What type of chemical reaction absorbs energy and requires energy for the reaction to occur?

• Endothermic

• Exotermic

• Exothermic

• Endotermic

Tags

NGSS.HS-PS1-4