Astudent notices dark clouds in the sky and that the playground is wet the student reasons that it rained which scientific skill describes the students reasoning a. classifyingb. observing c. inferringd. predicting

What is a metal replacement reaction

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.