How is heat transferred through thermal conduction?
A. Heat is transferred through space by energy waves.
B. Heat is transferred by the movement of a liquid or gas.
C. Heat is transferred through contact between molecules.
D. Heat is transferred by light reflecting off an object.

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o

Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side