The weights of all elements are always compared to oxygen.

When light strikes a plane mirror, images form in locations where light does not actually reach. it only appears to the observer as though the light were coming from this position. what type of image is formed?

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.