Carbon (C) and silicon (Si) are in group 4 of the periodic table. The atomic radius of carbon is 77 pm and sulfur is 103 pm. What is the circumference of each atom?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.