Mixtures, solutions, Physical characteristics

What would increase the rate of dissolving a salt in water?

• Increasing the surface area of the salt

• Not stirring it

• Low temperature

• Darker colors

What is solubility?

• The amount of surface area per a given mass

• The speed at which a substance dissolves

• The ability of one substance to dissolve in another

• The temperature at which substances become a mixture

More concentrated solutions tend to be...

• Lighter

• Thicker

• Thinner

• Darker

Tags

NGSS.MS-PS1-2

What is this?

• Pure substance

• Homogenous mixture

• Colloid

• Heterogenous mixture

Combination of two or more different kinds of substances that keep their own physical properties and can be easily separated.

• Solution

• Mixture

• Solubility

• Miscibility

The substance that does the dissolving

• Solute

• Solvent

• Solution

• Miscibility

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

• Filter
• Screen
• Magnet
• Evaporation

Glass bottle that is shattered

• Chemical Change
• Physical Change

Shredding a piece of paper

• Chemical Change
• Physical Change

How can you increase the concentration of a solution?

• add more solute

• add less solute

• add more solvent

• add less solvent