Which of the following best explains what happens as an ice cube melts? A. Thermal energy is transferred from the ice cube to its surroundings. B. Thermal energy is transferred from the surroundings to the ice cube. C. The chemical bonds holding the ice together break, releasing energy. D. The amount of energy in the ice cube must remain the same

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

Which substance has non polar covalent bonds

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