True or False Help: Broom, Screws, Water, Ice

  • Thread starter lynn0808
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In summary, the "True or False Help" experiment tests the validity of "like dissolves like" by observing the solubility of different substances in water. The broom is used to mix and activate polar molecules in the substances, while screws are included as nonpolar substances for comparison. When ice is added to water, it melts because the temperature of the water is higher. The temperature of the water can affect solubility, with warmer water being able to dissolve more substances due to increased molecular motion and energy.
  • #1
lynn0808
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c) It is easier to sweep with a broom if you hand is further up on the handle? is this true or false

d)A screw with fewer threads is easier to use than a screw of the same size with more threads- is this false?

e) Water at 4 Celsius is lighter than at 4.1celsius.? Is this true?

f) ice can release heat. is this true?
 
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  • #2
You aren't playing the Physics Forums game correctly. Give us your reason why one might be true or false, and then we can start from there.
 

1. What is the purpose of the "True or False Help" experiment?

The purpose of the "True or False Help" experiment is to test the validity of the statement "like dissolves like" by observing the solubility of different substances in water.

2. How does the broom affect the experiment?

The broom is used to mix the substances in the water and create a uniform solution. It also helps to activate the polar molecules in the substances, allowing for better dissolution.

3. Why are screws included in the experiment?

Screws are included in the experiment because they are nonpolar and do not mix well with water. This allows for a comparison to the polar substances and their solubility in water.

4. What happens to the ice when added to the water?

When ice is added to water, it begins to melt and turn into liquid water. This is because the temperature of the water is higher than the freezing point of ice, causing the ice molecules to break apart and become liquid.

5. How does the temperature of the water affect the solubility of the substances?

The temperature of the water can affect the solubility of the substances as warmer water can dissolve more substances than colder water. This is due to the increased molecular motion and energy in warm water, allowing for better interaction between water molecules and polar substances.

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