While Karen was cooking dinner, she noticed that several ingredients went through chemical and physical changes. Which cooking process is an example of a physical change? A. Boiling soup
B. Frying eggs
C. Baking cookies
D. Toasting bread

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

If one fission reaction of a uranium-235 atom produced two neutrons, how many neutrons would be released if the chain reaction occurred three more times?

Which statement are accurate about snow flakes