Solubility 2

Have you ever had to clean oil or grease from your hands?

If you rinse your hands in ​ (a)   alone, the oil remains on your hands.

But if you use ​ (b)   water, you can easily rinse the oil off your hands.

Oil is ​ (c)   in soapy water, but ​ (d)   in pure water.

• water
• soapy
• soluble
• not

Tags

NGSS.MS-PS1-2

Which is not one of the three factors that affect the solubility of a solute?

• Temperature

• polarity of solvent

• Pressure

• Density

Oil does not dissolve in water because oil is:

• Polar

• Nonpolar

• neutral

Which would not be a good dissolving combination?

NOT

• Polar - Non polar

• Polar- Polar

• Nonpolar - Nonpolar

Tags

NGSS.MS-PS1-2

A soap molecule has a ​ (a)   end, which attracts water molecules, and a n​ (b)   end, which attracts oil. The soap molecules ​ (c)   the oil into small droplets that are ​ (d)   in water.

• polar
• nonpolar
• break up
• soluble

What is attracted to the non polar end soap:

• water

• oil

• dirt

When a glass of cold water warms up to room temperature, ​ (a)   form on the inside of the glass. These bubbles are gases that were ​ (b)   in the water. They come out of the ​solution as the water temperature ​ (c)   . Unlike most solids, gases usually become ​ (d)   soluble as the temperature of the solvent increases.

• bubbles
• dissolved
• rises
• less

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Bubbles come out of the water/solution as the water temperature ________.

• rises

• lowers

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Gases usually become _______ soluble as the temperature of the solvent increases.

• Same

• More

• Less

Tags

NGSS.MS-PS1-4

In Salt, Na (sodium) is polar and Cl (chloride) is polar

NaCl contains positive and negative ions. Water contains atoms that have positive and negative poles.

The -Na (sodium) is attracted to what part of the polar water molecule:

• Positive

• Negative

Tags

NGSS.MS-PS2-3