Standard+3c

ACTIVITY: 1) Go to this website: [|http://preparatorychemistry. com/Bishop_Jmol_elements.htm] What do you notice about crystal structure? 2) Write a summary of the information below in your journal. 3) TAKE QUIZ HERE: https://www.quizlab.com/secured/authenticate_limited.cfm Click on "single class login", and input classword (tewinkle(#ofclass): ex. if you are in period 2, your classword is tewinkle2, Your password is first letter of name and as much of last name as fits (ex: htangen).
 * //Students know//** **//atoms and molecules form solids by building up repeat//** **//ing patterns, such as the crystal structure of NaCl or long-chain polymers.//** (Q. 17, 27)

The shape of a molecule is im  portant to its chemical and physical properties. So, whether it is crystal, amorphous, or a polymer matters for its function. Crystals of table salt, the compound NaCl, have a regular, organized structure. The sodium (Na + ) and (Cl − ) ions alternate places (i.e. every other: Na, then Cl, then Na, then Cl). Also important are organic polymers (like protein, carbs, fat, etc). In these, the carbon, hydrogen, oxygen and nitrogen atoms combine to form long, repetitive, stringlike molecules. Amorphous means without shape, and this describes solids that are basically just thrown together (not repeating structures like in the website below). Thus, solids can either be crystalline (structured, orderly, 3D lattice structure) or they can be amorphous (no lattice structure), or polymers (long chains).