Water and its properties!
Words to look out for the day:
Acid / BaseSolution / Cohesion
Adhesion / Surface tension
Solvent / Saturation
Solute / pH
Dipole
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- How well do we really know water?
Materials needed: ______
What did you do?
______
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- Universal what?
Materials needed: ______
What did you do?
______
What did you observe?
______
Water is a known as a universal ______. Solvent is the substance that does the ______. What is an example of a solvent? ______
Solute is the substance that does the ______. What is an example of a solute? ______
A ______solution is where the ______is not able to dissolve anymore ______.
- Bending it like the Airbender!
Materials needed: ______
What did you do?
______
What did you observe?
______
Water has two ______atoms and one ______atom. ______has a positive charge whereas ______has a negative charge. The net dipole is in the direction of ______. This makes water a ______molecule. In example of KCl, K has a ______charge whereas Cl has a ______charge. This balances the charges so this makes KCl a ______molecule.
Would KCl dissolve the food coloring from the previous step? ______
Why not? ______
______
Polar reacts with ______and non-polar reacts with ______.
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- Penny fun!
Materials needed: ______
Guess on the droplets: ______
Actual number of droplets: ______
What did you do?
______
Water tries to limit its ______so it takes up the shape of a ______. ______causes the water droplets to stick to one another. ______bonds help keep the water molecules together.
- Let’s just stick together…
Materials needed: ______
What did you do?
______
What did you observe?
______
Besides cohesive properties, water also has ______properties. This is why the colored solution stayed in the micro well plates.
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- Walking on water? Seriously?
What did you watch?
______
The ______uses the ______property of water to float on water whereas the ______uses the ______property of water as seen in the video.
How else are these properties used in the nature? ______
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Other properties:
Density:
Water ______when it is cooled and ______when it is heated. This is not the case for most liquids. This makes the ______float on ______.
Why is this helpful? Well, think about it. If a lake freezes and if it froze from the bottom, the ice would never ______. Because of water’s cool properties, the ice on the top layer protects the organisms underneath.
Capillary action: What property of water do roots use to transport water against the force of gravity? ______. This is called ______.
pH: ______is the measure of the ______or ______of a solution. Water has a pH of ______on a scale from ______to ______. Acids range from ______to ______whereas bases range from ______to ______.
List an example for an acid: ______
List an example for a base: ______
What is the pH of our blood you ask? ______to ______. Clearly, it’s very sensitive. What’s the pH in our stomach? ______to ______. This is why tablets are made in such a way that they don’t get dissolved by the stomach acids.
Relation to water: ______substances are afraid of water. ______is such an example. ______substances love water and ______is such an example.