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SS2 S3W6 Homework - Starches and gelatinization

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Last updated 5 months ago
19 questions
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Question 1
1.

watch the following video
Do you have any questions?

Question 2
2.

A hydrogen bond is

Question 3
3.

compared to the bonds inside the molecules, hydrogen bonds are

Question 4
4.

When you heat water the molecules of the water

Question 5
5.
molecules moving faster makes it __________ to break the hydrogen bond.
Question 6
6.

cooking involves frequently breaking hydrogen bonds.

Question 7
7.

quick review - match the type of bond to what is being bonded

Draggable itemarrow_right_altCorresponding Item
ionic bonds
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protons and neutrons
hydrogen bonds
arrow_right_alt
bonds between atoms because they have different charge. these form some molecules
covalent bonds
arrow_right_alt
bonds between atoms because they are sharing electrons. these form some molecules
nuclear bond
arrow_right_alt
bonds between different molecules, one frequently being water
Question 8
8.

Watch this video on gelatinization and retrogradation. Do you have any questions?

Question 9
9.

What keeps two strands of amylose together?

Question 10
10.

What breaks those molecules apart?

Question 11
11.

What bonds them back together?

Question 12
12.

The starch molecules are in little granules. What does not happens after those absorb water?

Question 13
13.

The structure of the molecules after gelatinization is

Question 14
14.

When you leave bread out it goes stale this is called

Question 15
15.

If you make something gelatinize and then let retrogradation happen, you end up exactly where you started.

Question 16
16.

The next four questions are just for the 8th grade and honors students.
explain the difference between Amylose and Amylopectin molecules described in the videos.

Question 17
17.

Explain why the bonds between amylose and the bonds between amylopectin tend to be different.

Question 18
18.

Would you consider the process of gelatinization to be a physical change or a chemical change? explain why.

Question 19
19.

How something gelatinizes can sometimes depend on the amount of sugar you have mixed in with your starch and water. Different amounts of sugar might
  • Raises the temperature required for gelatinization
  • Interferes with water absorption by starch molecules
  • Prevents complete starch granule swelling
  • Increases the stability of starch structures
Explain why understanding these interactions may be important for someone to learn to cook well.