Answer to Question #299424 in General Chemistry for Yeonjun

Question

Hypothesis 1: What will happen if you will slowly sprinkle starch on a glass of water?

Hypothesis 2: How does the movement of a marble differ on Water vs. Oil?

Hypothesis 4: Which will boll faster, a salt solution or a pure water?

Hypothesis 5: Which will vaporize faster between alcohol and water?

Answer 1

1)

Addition of starch on water produces a suspension with,none Newton properties.

This is a physical change,and starch is insoluble in water.

2)

Different liquids have different viscosities.

A mable falls more slowly through oil which is more viscous than water.

The more viscous liquid is, the more resistance to flow, making it more difficult for marble to travel through them.

4)

Salt solution has a higher boiling point and a lower specific heat capacity than pure water.

Overall salt solution boils faster than pure water.

5)

Alcohol has a lower latent heat of vaporization compared to water and it also has a lower boiling point, therefore it vaporizes faster than water.