Objective 6 for Homework 10

1.  Acid - A substance that is sour in taste and lower that seven on the pH scale.

2. Neutralization - when something is in the middle of two sides (like Switzerland:) and that doesn't favor one or the other

3. indicator - a solution that changes color when added to a substance so that you can see where it is on the pH scale

4. corrosive - a substance with an ability to corrode or to "eat" away at a metal

Objective 5 for Homework 10

1. The two parts of digestion are mechanical and chemical.
2. Mechanical digestion is when the physical work is done ( such as chewing or moving the waste into your intestines) and chemical digestion is the breakdown of food with stomach acid.
3. This would cause their body to have to produce a lot more stomach acid which might lead to other problems.
4. the mouth: 7; the stomach: around 2-2.5; the small intestine: 8

Objective 4 for Homework 10

1. Hydrogen ions are found in all acids.
2. When put in water acids form hydrogen ions and bases form hydroxide ions.
4. A substance's pH tells you the amount of H+ ions in it.
5. The substance would have more H+ ions b/c the lower you get on the scale the more H+ ions you get in a substance so a 6 would have .000001 ions and a 3 would have .001ions.

Objective 3 for Homework 10

1. Acids taste sour, give off hydrogen ions, are corrosive, and turn litmus paper red.
2. feel slippery, good for stripping oil and dirt off of human body, turn litmus paper blue, and taste bitter.
3. You can determine whether a substance is an acid or a base by submerging the strip into the substance and if it is blue it is a base and if it is red it is an acid and if it is neither it is water.
4. You can tell by the taste. An acid tastes sour. An example of this would be a lemon b/c lemons are both sour and acidic.

Objective 2 for Homework 10

1. To measure how much something is concentrated you have to know the ratio of solute to solvent.
2. It can be useful b/c it the ability of a substance to dissolve. So if you know how much it can dissolve then you it's maximum concentration.
3. One thing that affects the solubility is molecular size. If a solute has large moleucle then it makes it harder to dissolve things and vice versa.
4. Temperature is needed to break down the solid so that it will be soluable and in liquids as well but it isn't necessary. In a gas it decreases the solubility of a substance.

Objective 1 for Homework 10

1.  A suspension is a heterogeneous fluid (consisting of diverse ingredients) and the particles will eventually settle. An example of this is sand and water. A colloid is a substance that is dispersed throughout another. An example of this is milk. A solution is a mixture in which a solute is dissolved in a solvent. An example of this is sugar in water.
2. The water particles are attracted to the sugar particles and the crystals begin to break appart. This is why it looks as if the crystals disappear.
3. The solute will lower the freezing point to different levels depending on how many particles are dissolved into the water. This rule will also raise the boiling point of a solution.
4. It would make a suspension because the particles were not dissolving or breaking apart from each other when it entered the water, it was just mixing with it and after a while the food coloring will eventually seperate from the water.