Honors Chemistry Solid State

Name: HONORS CHEMISTRY – SOLID STATE http://chemistry.about.com/od/matter/a/Types-Of-Solids.htm

Two types of solids in broadest terms:

1. ______Define:

2. ______Define:

Crystals are made of unit cells. A unit cell is the “smallest unit that the crystal can be divided into.” Like Lego blocks that assemble to make a castle, each individual block is a unit cell.

The crystal lattice and unit cell of a crystal of sodium chloride. Sodium ions, Na+, are the smaller spheres, Chloride ions, Cl–, are the larger spheres. (a) Overall crystal lattice; (b) unit cell; (c) unit cell, showing division of spheres.

Basic Unit Cell Shapes: The shape of the unit cell reflects the shape of the overall crystal. Four Types of Crystalline Solids Fill out the chart below:

Type of Particles Force(s) Properties (3-4) Examples Crystalline Found at unit holding crystal Solid cell positions together

Ex: Molecular Atoms or Intermolecular Low melting Points, Water (Ice), Solid Molecules Forces soft solids, brittle, Sugar nonconductors of (Sucrose) heat and electricity,

Ionic solids

Metallic solids

Covalent Network (atomic) solids Classify the compounds below:

Compound Type of Crystalline Solid

NaC2H3O2

Mg(OH)2

C (diamond)

Question: Watch the video https://www.youtube.com/watch?v=kypne21A0R4 and answer question below: If atoms are mostly empty space, how can there be solids? Visit: http://news.nationalgeographic.com/news/2007/04/photogalleries/giant- crystals-cave/

View a few of the photos of the “Crystal Cave.”

Where is the crystal cave located?

What type of crystal are the structures made from? Ionic Covalent Molecular Metallic Covalent Network

What is the common name of this chemical?

What is the average temperature of the cave?

HONORS CHEMISTRY – LIQUID STATE

Visit: https://www.boundless.com/chemistry/liquids-and-solids/liquid-properties/

CLICK on “Surface Tension”

What is surface tension?

What causes surface tension?

ARROW BACK to the previous screen.

CLICK on “Viscosity”

What is viscosity? Analyzing the table of sample viscosities, what type of liquids have high viscosity values?

Why do you believe this is so?

ARROW BACK to the previous screen.

CLICK on “Capillary Action”

What is capillary action?

Watch this video on surface tension https://www.youtube.com/watch? v=u5AxlJSiEEs&list=RDHm52rkh68JA&index=2&nohtml5=False

Explain what intermolecular force is responsible for the second demonstration.

Watch this video on viscosity https://www.youtube.com/watch?v=3KU_skfdZVQ .

Name the substance with the most viscosity.

Watch this video on capillary action https://www.youtube.com/watch? v=y9hprlmck44&nohtml5=False

How could this video help you for prom? (Sorry for all of the biology!)

Visit http://www.chem.purdue.edu/gchelp/liquids/character.html

Read through the comparisons the site lists between solids, liquids, and gases.

*What are TWO properties that liquids and solids share?

*What is ONE property that liquids and gases share?

Watch this video https://www.youtube.com/watch?v=3tKotpM77To&nohtml5=False State one” fact” stated in video that is not true.