What type of energy transformation is taking place when natural gas is used to heat water?
a. chemical energy to thermal energy
b. thermal energy into mechanical energy
c. mechanical energy into electromagnet energy
d. electromagnet energy into chemical energy

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Compare and contrast the bohr model and the electron cloud models of the atom.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions