Atoms are labelled with their symbols. Angles with lone pairs are typical measured values. The right side shows the Lewis structure and what a thin stream of the liquid would do near a charged rod.
Teaching model. Molecules turn in the plane of the screen only, and the field is made far stronger than a real lab field so the lining-up is easy to see. Higher temperature means harder random knocks, so fewer molecules stay lined up.
Predict first, then check. The worked reasoning plays step by step: count valence electrons, build the Lewis structure, count groups, place them in 3D, hide the lone pairs, add the dipoles, and name the hybrids.
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 answers are fine here. Each one tells you why.