HOW CAN I DETERMINE A METAL FROM A NON METAL?

WILL THERE BE DIFFERENCES IN INTRINSIC AND EXTRINSIC

PROPERTIES?

EXPLAIN IN AT LEAST 3 SENTENCES

Warm-up

Unit 1 • Investigation V

A chemical bond is an attraction between atoms that holds them together in space.

Notes

Unit 1 • Investigation V

Atoms which are connected into many identical units are called molecules. They units may be composed of only two atoms or of dozens of atoms.

(cont.)

Notes (cont.)

Unit 1 • Investigation V

Model 1: IONIC Properties: Made of metal and non-metal atomsDissolves in waterConducts electricity when dissolved but

not when solidBrittle solidsDescription of drawing: Spheres without

gray areas represent metal atoms. Spheres with gray areas are non-metal atoms. Metal atoms “give up” their valence electrons to non-metal atoms.

Notes

(cont.)

Unit 1 • Investigation V

Model 2: COVALENT NETWORKProperties:Made entirely of nonmetal atomsDoes not dissolve in waterDoes not conduct electricityVery hard solidsDescription of drawing: Valence

electrons connect atoms with each other in all directions – like a grid or network. (cont.)

Notes (cont.)

Unit 1 • Investigation V

Model 3: METALLICProperties:Made entirely of metal atomsDo not dissolve in waterConduct electricityBendable solidsDescription of drawing: Valence

electrons are free to move throughout the substance like a “sea” of electrons.

(cont.)

Notes (cont.)

Unit 1 • Investigation V

Model 4: MOLECULAR COVALENTProperties:Made of nonmetal atomsSome dissolve in water, some do notDo not conduct electricityTend to be liquids or gases or softer

solidsDescription of drawing: Valence

electrons are shared between some atoms. This creates small stable units within the substance. (cont.)

Notes (cont.)

Unit 1 • Investigation V

Ionic

CovalentNetwork Metallic

MolecularCovalent

(cont.)

(cont.)

Warm-up

Explain the 4 bond types and how I can tell the difference between each.

Must be at least 4 sentences!

Unit 1 • Investigation V

Predictions Test Results

Station

Substances Conduct?

Yes/No

Dissolve?

Yes/No

Conduct?

Yes/No

Dissolve?

Yes/No

Conduct when wet?

1 H2O(l), water N/A N/A

1 Al(s), foil aluminum

2 C20H42(s), paraffin (wax)

3 CaCl2(s),

calcium chloride

4 C12H22O11(s), sucrose (sugar)

5 NaCl(s), salt,

sodium chloride

6 CuSO4(s), copper sulfate

7 Cu(s), copper

8 SiO2(s), sand,

silicon dioxide

Make this chart on the left side of your journal

Bonding Lab- Due FridayIntroduction- What are we testing for?

Purpose- To determine the bonding type of substances based on whether they can conduct electricity and/or be dissolved in water.

Include your predictions from your chart Create your own hypothesis!

Materials and Procedure (use your chart to help you with materials!)

Data- this is your chart!Analysis- What does your chart state.

Create a flow chart as your graph- explain what you see in your flow chart

Conclusion- Did you prove your hypothesis? What characteristics determine which bond? (use your notes) Classify each of the substances into a bonding type. Did you have any trouble while conducting the experiment? How could we improve our experiment?

3-2-1 and Foldable

Read pgs 130-134 INDIVIDUALLY!For each section (they are numbered) complete

a 3-2-1 3= three things you learned 2= 2 questions you have 1= a ten word summary

When you are done- create a foldable of the 4 types of bonding Name of Bonding type Picture Characteristics of Bond (there should be 4 of each)