SCIENCE HW

1.      What are the two parts of digestion?

The Stomach and Small Intestine.

2.      How do those two parts differ?

The intestine is a lot weaker than the stomach. If you small intestine starts bleeding, there is not an easy way to stop it. The stomach can store things and all-like-a-that.

3. People who have lost most of their teeth may have trouble chewing their food. How does this affect their digestive process?

It may mean that they don’t get enough food and may get choked easier. It also means that the pieces of food may go down longer which makes things bigger and harder to store.

3.      What is the pH in your mouth? Stomach? Small intestine?

The normal is about 7 for your mouth. The stomach is about 2.0 which means it’s a pretty strong acid. The small intestine is about 8.

4.      Why are pH variations in different parts of the digestive system important to the process of digestion?

They vary because of the things that those 3 parts are used for in your digestive system.

http://wiki.answers.com/Q/2major_parts_of_digestive_system

http://wiki.answers.com/Q/What_is_the_ph_in_your_mouth

http://www.google.com/search?hl=en&biw=1174&bih=456&rlz=1R2SKPT_enUS407&q=What+is+the+pH+in+your+stomach%3F&aq=f&aqi=&aql=&oq=&gs_rfai=

http://wiki.answers.com/Q/What_is_the_ph_of_your_small_intestine

Science HW

1.      What are the characteristics of solutions, colloids, and suspensions?

An example of a solution is water. Colloids aren’t affected by gravity. Suspensions can be filtered.

2. What happens to the particles of a solute when a solution forms?

The particles of the solute leave.

3.      How do solutes affect the freezing point and boiling point of a solvent?

The Substance will either rise or decline the boiling point or freezing point of a solvent.

4. Suppose you mix food coloring in water to make it blue. Have you made a solution or solution or a suspension? Explain.

You would make it a solution because the food coloring just mixes it but doesn’t change the whole particle.

5. What effects do solutes have on a solvent’s freezing and boiling points?

It raising or going down.

http://www.saskschools.ca/curr_content/science10/unita/redon13.html

http://answers.yahoo.com/question/index?qid=20080308211617AAHmDho

http://www.sciencebase.com/science-blog/how-does-salt-affect-the-boiling-point-of-water.html

http://wiki.answers.com/Q/What_happens_to_the_solute's_particles_whenever_a_solution_forms

Science HW OBJECTIVE #2

1.       Concentration is when you need to know the ratio of the solvent to the solute.


2. Solubility is useful in find things because of common matter.  

3. Three factors: temperature pressure, and polarity.

4. Breaks the bonds.

5.The definition of Solubility is  the quality or property of being soluble; relative capability of being dissolved. This means that it would dissolve easily.

www.griffinscience.com

http://dictionary.reference.com/browse/Solubility+

http://en.wikipedia.org/wiki/Concentration

Science HW Objective 6

Definitions for Science – Objective 6 Science HW

1.   Acid - a compound usually having a sour taste

2.   Neutralization - the act, process, or an instance of neutralizing.

3.   Indicator - a substance, as litmus, that indicates the presence or concentration of a certain constituent

4.   Corrosive - something corrosive, as an acid or drug.

5.   Hydroxide Ion - the anion OH−.

http://dictionary.reference.com/

Science HW OBJECTIVE #3

Science HW Objective 3

1.     Four properties of acids:

a.     Electricity,

b.     react with a base

c.     react with metals

d.    Sour-tasting

       2. Four properties of bases:

a.     electricity,

b.     feel cold on skin.

c.     react with acids

d.    bitter tasting
3.  Litmus Paper

1= ACID

7=IT DEPENDS

14=BASE
4. One option is getting a piece of litmus paper and sticking it in the food.
5. The acids and bases in the fertilizer can lead to serious diseases. This is why it would be a good idea to wear gloves!