CH-059 alkali metals in water, preview v3

Draft for review, not approved. Stitched preview (24 s):

Individual clips

C1 cut sodium (v3)

C2 sodium on water (v2, trimmed to 3.2 s)

C4 (v1)

C6 (v1)

C3 potassium (v3, trimmed, hand removed)

C7 spatter (v2)