Question

1. which type of mixture has varying sizes of particles that are large enough to cause visu large enough to settle or be filtered out of the mixture?

a. colloid
b. solution
c. suspension
d. homogeneous

1. this is a model of a mixture.

● is an atom of element x
● is an atom of element y
how should the model be described?
a. mixture of element x atoms only
b. mixture of element y atoms only
c. mixture of element x and y atoms
d. mixture of element x and y atoms and a molecule of a new substance

1. which is an example of a homogeneous mixture that is a solution?

a. gelatin
b. salad dressing
c. salt and pepper
d. salt water

1. which mixture has particles large enough to settle out of the mixture?

a. suspension
b. colloid
c. solution
d. compound

Explanation:

Question 6

• Colloid: Particles are small - medium sized, do not settle easily, and cannot be filtered out easily.
• Solution: Particles are very small, uniformly distributed, do not settle, and cannot be filtered out.
• Suspension: Particles are large, can cause visible effects, and will settle or can be filtered out.
• Homogeneous: A general term for a uniform mixture (solution is a type of homogeneous mixture).

Question 7

• The model shows two types of atoms (element \(X\) and element \(Y\)) with no indication of a new substance (no chemical combination to form a molecule of a new compound). So it is a mixture of element \(X\) and \(Y\) atoms.

Question 8

• Gelatin: A colloid (not a true solution).
• Salad dressing: Usually a heterogeneous mixture (may separate into layers).
• Salt and pepper: A heterogeneous mixture (can see different components).
• Salt water: A homogeneous mixture (salt is dissolved in water, uniformly distributed).

Question 9

• Suspension: Particles are large enough to settle out of the mixture.
• Colloid: Particles are in the intermediate size range (do not settle easily).
• Solution: Particles are very small (do not settle).
• Compound: A pure substance (not a mixture).

Answer:

1. c. suspension
2. c. mixture of element \(X\) and \(Y\) atoms
3. d. salt water
4. a. suspension