HOW CAN I DETERMINE A METAL FROM A NON METAL? WILL THERE BE DIFFERENCES IN INTRINSIC AND EXTRINSIC...
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Transcript of HOW CAN I DETERMINE A METAL FROM A NON METAL? WILL THERE BE DIFFERENCES IN INTRINSIC AND EXTRINSIC...
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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
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Unit 1 • Investigation V
A chemical bond is an attraction between atoms that holds them together in space.
Notes
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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.)
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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.)
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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.)
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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.)
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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.)
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Unit 1 • Investigation V
Ionic
CovalentNetwork Metallic
MolecularCovalent
(cont.)
(cont.)
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Warm-up
Explain the 4 bond types and how I can tell the difference between each.
Must be at least 4 sentences!
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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
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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?
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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)