1. What step dogs every scientific experiment begin with? A hypothesis
B. procedures
C conclusion
D. question/problem

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

Do polar molecules have ionic bonds?

Wind and moving water provide energy. chemical mechanical thermal none of the above