Please help! Choose one of the chemical reactions seen in the images on the last activity
1. Explain what happens in terms of energy/ enthalpy change.
2. Is AH negative or positive?

The reaction choices are Fire, Photosynthesis,
condensation, cokking an egg, or melting ice

you can choose any one.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy