90 likes | 113 Views
Learn about the concepts of exothermic and endothermic reactions, where energy is either released to or absorbed from the surroundings. Discover examples like hot and cold packs, fireworks, and more!
E N D
Balance These Equations • Fe + H2S04 Fe2(SO4)3 + H2 • SnO2 + H2 Sn + H2O • KNO3 + H2CO3 K2CO3 + HNO3
Exothermic and Endothermic Reactions LO: Define the terms exothermic and endothermic. State that in a reaction bonds have to be broken and then made.
Exothermic Reactions • A reaction where energy is given out from the reaction into the surroundings. A temperature rise would be measured.
Endothermic Reaction • A reaction where energy is taken into the reaction from the surroundings. A temperature drop would be measured. Hot and Cold Packs
Say if each example is an exothermic or endothermic reaction. • Using an ice pack on an injury. • Burning a match. • Respiration. • Dynamite exploding. • An ice cube melting. • Glow sticks glowing. • The reaction of an acid and a metal. • Photosynthesis.
Endothermic • Exothermic • Exothermic • Exothermic • Endothermic • Exothermic • Exothermic • Endothermic