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Properties of Solids Lab Help

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Krystalsnow2013:
Consider FIVE types of solids:
Ionic (NaCl)
Metallic (Ca)
Covalent Network (Quartz, SiO2)
Polar Molecular (sugar, C6H12O6)
Non-polar molecule

RECALL THE PHYSICAL PROPERTIES -> hardness, brittleness, the conductivity of electricity and heat, melting and boiling points, solubility in water, etc.

1. Design an experimental procedure to test these properties with the procedures below.
-> the ones I have so far
- ionic solids -> use NaCl and dissolve in water to test the solubility
- conductivity - by putting the solid under two free ends of the wire
-> solubility - using boiling water for all as ionic solids break into ions & conduct electricity
- brittleness - using a hammer or any other form of stress (if brittle, tends to break under stress)
- hardness - using a hydraulic press/Rockwell testing
- melting/boiling point - add heat to a sample after placing in a beaker or test tube to test

SOME OTHER THINGS WE CAN USE (but I'm unsure as to what we can use it for): a thermal camera

2. WRITE A HYPOTHESIS for ONE TYPE of solid with a brief explanation.
-> I'm having some trouble with where to start for this?

3. Design a Table of Observations for your experiments.
-> I'm unsure as to how to do this??

Borek:

--- Quote from: Krystalsnow2013 on March 20, 2023, 06:23:30 PM ----> solubility - using boiling water for all as ionic solids break into ions & conduct electricity
--- End quote ---

You actually don't need boiling water for the test.


--- Quote ---- hardness - using a hydraulic press/Rockwell testing
--- End quote ---

Even just trying to scratch with a knife will give some info.


--- Quote ---SOME OTHER THINGS WE CAN USE (but I'm unsure as to what we can use it for): a thermal camera
--- End quote ---

Not sure what for. Heat conductivity to some extent perhaps.


--- Quote ---2. WRITE A HYPOTHESIS for ONE TYPE of solid with a brief explanation.
-> I'm having some trouble with where to start for this?
--- End quote ---

It can be really anything, like "harder solids have higher density". Doesn't matter if it is true, you are about to test it to either prove, or disprove.

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