what is similar about elements in the same group on the periodic table? A) atomic masses B) atomic numbers C) chemical properties D) number of electrons

A 500N person stands in an elevator that is moving downward at constant speed. The force that the floor exerts on the person must be A) 500N upward B) 500N downward C) less than 500N upwards D) less than 500N downward

how does electrical current change when more devices are added to a series circuit? To a parallel circuit?

When two of the three variables are known the wave equation can be used to determine what

The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, where did the elements heavier than hydrogen and helium come from?

A new organism is discovered at the bottom of the ocean. A scientist is determining the composition of elements found in the tissues of the organism.

If the volume of a container increases, then the pressure will: A. first increase and then decrease. B. increase. C. stay the same. D. decrease.

How does the theory of natural selection explain the diversity of life?

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

Which statement would be a valid argument in favor of using nuclear power? There are few negative impacts from mining the fuel. Reactors are safe from natural disasters. There are little to no waste products from fission.

How would you convince somebody that the momentum of an isolated system is constant?