How do elements change as you go down a group in the periodic table?

A. The average atomic mass decreases.

B. The atomic number increases.

C. The atoms become more metallic.

D. The number of valence electrons increases.

Assume the objects listed below have the same velocity. Which object has the most kinetic energy?

Which of the following is calculated by dividing work by time? A.) Power B.) Energy C.) Force distance

Three characteristics of scissor

Metal sphere A is hung from the ceiling by a long, thin string and given a positive charge. An identical sphere B is suspended nearby with an identical string and given a negative charge that has the same magnitude as the charge on A.

Name an isotope used in medicine? What its used for

You and your housemate have an argument over the cost of the electric bill. You want to turn off the outside porch light before going to bed each night.

Work is a product of A force and distance B force and heat energy C cause and heat energy D cause and effect

An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is 1020 kg/m3, what is the maximum pressure on the submarine hull?

Why cooking pans don't have have metal handles?

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band