The correct answer is false. The statement given does not describe a property in general. However, it speaks of a specific type of property which is the physical property. This property is the one that does not change the identity of a substance. A property can also be a chemical property where the identity of a substance is changed.
Rocks are classified as igneous, sedimentary or metamorphic.
Answer:
2Al + 6H2O --> 2Al(H2O)3 + 3H2
Explanation:
aAl + bH2O --> cAl(H2O)3 + dH2
To balance this equation, the Al(H2O)3 is first multiplied by c = 2 to even out the water molecule.
Since we have done that, the reactant water molecule is balenced with b = 3 so that the difference in the Hydrogen in the aluminum hydroxide molecule and the reactant water molecule, which is 6 goes to the H2 (d = 3) in the product.
Then, the Al metal is balanced with a = 2 and then the reaction is balanced.
2Al + 6H2O --> 2Al(H2O) + 3H2
I believe it would be the first option. It forms iron oxide (rust) when exposed to moisture and air.
