This category of elements is also known as semiconductors.

This category of elements has brittle and nonmalleable solids.

This technique for separating a mixture is used to separate water into the elements of hydrogen and oxygen.

This technique for separating a mixture is used to separate crude oil into its components.

This technique for separating a mixture is used to separate heavier blood cells from plasma.

This technique for separating a mixture is used to separate particles in a suspension.

In nature, the element __________ is needed to make proteins.

The element that has 6 protons within its atom is__________ .

An element that has 8 valence electrons would be__________.

An element that has an atomic number of 4 would be found in which period on the periodic table?

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