Astudent knows that the sublimation point of carbon dioxide (co ) is -78.5°c. that is, at this temperature, solid carbon dioxide will change state directly from a solid to a gas. the student is asked to predict the temperature at which gaseous carbon dioxide will change directly from a gas to a solid. which prediction will be supported by experimental evidence?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).