Acid and Base

• hydrogen ions (+), sour/acid
• hydroxide ions (-), alkaline
• pH (instead of pOH)

Exothermic and Endothermic Energy

• energy, yes, but how do we measure it?
• joules, measure of energy, heat...thermometer, temperature; measures average thermal energy (aka heat)
  

Converting PNG to JPEG (or a white background)

• how to convert
• https://imagy.app/how-to-make-a-background-transparent-in-gimp/

Light

• Photons - particle and a wave
  

Color blinds

• We will

Philosophical Question

• How do you know you know?

Assigned:

• Philosophical: How do you know what you know?