Zinc can not be changed into a simpler substance by a chemical or physical process. Therefore, zinc is classified as a gas.
a molecule
an element.
a compound.

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

How many grams are in 68.2 molecules of br2?

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability