Design and technology aims to satisfy peoples’ needs and wants

Which terms are used to identify pure substances

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

Which us an example of the practical pursuit of alchemy? a. linking spiritual characteristics with material substances b. forming perfect substances c. developing metalworking technique d. transforming base metals