acids and bases/solutions

Which of these substances is acidic?

• tap water
• lemon
• ammonia
• baking soda

This piece of pH paper has been dipped into:

• An acid
• A base
• A pH-neutral substance
• A buffer

Tags

NGSS.MS-PS1-2

Healthy environments for life have a pH closest to:

• 1
• 3
• 7
• 10

What is a property of bases?

• Slippery touch
• Sour taste
• Ability to dissolve metal
• Ability to form hydronium ions

A substance doing the dissolving, usually the part of a solution present in the larger amount

• solvent

• solute

• solution

• solubility

a measure of how acidic or basic a solution is; the low it is the more acidic, the higher the more basic

• concentration

• pH

• conductivity

• solubility curve

a solution that contains more of the dissolved solute than could be dissolved by the solvent under normal circumstances; increasing temperature or pressure can increase the maximum possible solute dissolved in a solvent

• saturated

• unsaturated

• super saturated

• concentration

a factor that affects solubility by increasing the kinetic energy of the molecules; the more rapid motion means that the solvent molecules collide with the solute molecules more often allowing dissolving to happen faster and more solute to be dissolved

• saturation

• temperature

• agitation

• surface area

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

a factor that affects solubility by decreasing the size of the solute particles to increase solubility rate; grinding a solute is an example of this factor

• agitation

• temperature

• surface area

• saturation

Based on the solubility chart, which of the listed salts is the most soluble at 40°C?

• KCl
• KClO₃
• KNO₃
• Pb(NO₃)₂

Tags

NGSS.MS-PS1-2