Question 1 (2 points) Gravity pulled materials together forming the planets in our solar system. The inner
planets consist of dense material, such as iron, which was pulled to the center of the
planets. Materials such as ice, liquid and gas formed the outer planets. Scientist
identify this process as:
Planetary Arrangement
Solar System Systematic Development
Planet Differentiation
Heavy Metal Gaseous Planetary Design

they are called fossil fuels

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.

explanation: