11. In the chemical equation shown, what are the reactants? 4 AI + 3 02 → 2 Al2O3
A. Al2O3
B. Al2O3 and Al
C. Al and O2
D. Al2O3and O2

b) nuclear ive learned that in a pedtrodic table

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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