The electrons in the outermost shell are called ______________ electrons
Fill in the blank(s) with correct word
valence
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The scarps on Mercury are extremely similar to the cratered lunar highlands in appearance
Indicate whether the statement is true or false
When a proton moves in a direction of the electric field, its potential increases but its potential energy decreases
Indicate whether the statement is true or false
Newton's principles of mechanics are important because
A) they tie together [or "explain"] a wide range of observed phenomena. B) of the influential role they played in the development of science during the 14th and 15th centuries. C) no exceptions have ever been found to them. D) Actually they are of little importance, due to their limited range of validity. E) Actually they are now known to be incorrect and hence are of no real scientific importance today.
The gravitational force exerted on a particle outside a sphere with a spherically symmetric mass distribution is the same as if the entire mass of the sphere was concentrated at its center
Indicate whether the statement is true or false