An atom has at least one positive proton and at least one negative electron. which of the following is true about the protons and electrons in an atom?
a.
protons and electrons are far apart with empty space in between.
b.
protons and electrons are stuck together in neutral pairs.
c.
protons and electrons orbit close together around a central nucleus.
d.
protons and electrons are mixed together in a cloud.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

All of the following are part of the biosphere except