Fast review mode: answers are shown by default so you can skim quickly. Hide them if you want to self-test.
Thermal and chemical are two examples of energy types. There are different types of energy. Physicist Hermann von Helmholtz established that all forms of energy are equivalent - energy in one form can disappear but the same amount of energy will appear in another form.
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.