Answer:
Explanation:
NaCl does not contain molecules
The law of conservation of energy is that energy cannot be created or destroyed, but it can be transferred or transformed from one form to another (including transformation into or from mass, as matter). The total amount of energy in a closed system never changes. energy in a system may be transformed so that it resides in a different state.
One chemical change would be baking the muffin.
One physical change would be chopping the fruits to add to the mixture
Because all atoms are made from the same particles which are protons, neutrons, and electrons.
Hope this helped!!!
Answer:
I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."
Explanation:
I remember from last year but I'm not totally sure. Good luck!
