Particles are a small sample, scaled so the ratios match the real amounts. Numbers in the table use the full amounts. Temperature change counts neutralization heat only; conductivity is an ideal estimate.
Colour depth and particle crowding both follow the molarity. Each zoom window shows the same tiny volume, so more dots means a higher concentration.
Press Show worked solution (or get it right) to watch the setup build term by term, with units cancelling in red.
Your job
Drag a card onto a box, or tap a card and then tap the box's name. Cards are buttons, so Tab and Enter work too.
Wrong picks are fine here. Each one tells you why.