How many valence electrons are found in the outermost energy level of fluorine (F) ?

A) 2

B) 7

C) 9

D) 19

Fuels cell automobiles use__ gas as a fuel

Malia was able to make a paper lip float on the surface of water. What will most likely happen to the paperclip if a drop of dishwashing detergent is added near it?

What is a property of a base? A. bitter taste B. watery feel C. unreactive D. nonelectrolyte

How are elements organized on the periodic table a. symbol b. element name c. atomic mass d. no set organization

An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have?

The kinetic theory assumes that collisions of gas particles are perfectly elastic. What does this statement mean?

Roger believes that he is following a healthy regime by taking lots of vitamin E everyday. What property of vitamin E makes Roger's practice potentially unhealthy?

A 68-kg man whose average body temperature is 39°C drinks 1 L of cold water at 3°C in an effort to cool down. Taking the average specific heat of the human body to be 3.

As longitudional waves travel, particles in the medium are pushed together and then pulled apart. we call this

Which organelle would generate energy to power cellular activites