Standard
2: Structure of Matter
All forms of matter are composed of one or more of the elements. Elements have distinct properties and atomic structures. All matter is comprised of one or more of over 100 elements. Each of the more than 100 elements of matter has distinct properties and a distinct atomic structure.
£ I can describe the structure of the atom and the functions of its three main particles.
£ I know the atom is composed of protons, neutrons, and electrons.
£ I understand that compounds are formed by combining two or more elements.
£ I know that compounds have different properties than the elements alone.
£ I can explain how atoms and molecules form solids by building up in patterns.
£ I can recognize the crystal structure of NaCl and the structure of long-chain polymers.
£ I understand the phases of matter (solid, liquid, gas) depend on molecular motion.
£ I can describe how the atoms in solids are closely locked in position and only vibrate.
£ I can compare the loosely connected and colliding atoms and molecules in liquids.
£ I can talk about how atoms and molecules in the gas phase can move independently.
£ I can use the periodic table to identify elements in simple compounds.
Evidence
of Mastery for the Standard
By
Class of 2010