1. The powdered milk is being dissolved by moving the spoon in circular motion

Fact:

• When you dissolve milk to water and stir in circular motion the milk will spread evenly. this is what we called homogeneous

2. A solid lump of sugar will dissolve much more slowly than the amount of sugar in small granules

Fact:

• It has less surface area exposed to the solvent.

5.The iodize salt dissolves

Fact:

• It has smaller particles and rock salt used for preserving the coldness ice cream because it can dissolve longer

Explanation:

• The iodized salt will dissolve faster, simply because it has finer granules, exposing more of its surface area to the water than the typical rock salt

My New Answer:

Choices:

• Particle size
• agitation or stirring
• increase in temperature
• concertration of solution

>>>>>>>>>

1. The powdered milk is being dissolved by moving the spoon in circular motion

• Agitation or stirring

2. A solid lump of sugar will dissolve much more slowly than the amount of sugar in small granules

• concertration of solution

3. The dissolution of 15 tbsp. of rock salt in 3 mL of water is at 68°C.

• I don't knów..

4. When the solute and solvent are first mixed, the rate of dissolving is at its maximum.

• I don't knów..

5. The iodize salt dissolves

• Particle size

Note: I don't knów the answer in no. 3 and 4 im sorry..