Particle z 5. Researchers are investigating processes that happen during digestion.
Which answer choice describes only a physical change during digestion?

What happens when an acid dissolves?

In salt water solution,the salt is the blank

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