Which of the following statements about minerals is false?
a minerals have a crystalline structure.
b humans can create minerals to suit specific needs.
c minerals are inorganic materials.
d minerals cannot be liquids or gases.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

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.

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]