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Rotate organs and molecules, and watch concept videos that make tough chapters click.
Nucleus with 6 protons and 6 neutrons, and 6 electrons revolving in the K and L shells.
Science
One oxygen atom covalently bonded to two hydrogen atoms at a bent 104.5° angle.
The simplest saturated hydrocarbon — a perfect tetrahedron of four C–H bonds.
The giant ionic lattice of common salt — Na⁺ and Cl⁻ ions packed alternately.
Two sugar–phosphate strands twisted around each other, joined by base pairs.
Field lines leaving the north pole, curving through space and entering the south pole.
A coil of insulated copper wire that behaves exactly like a bar magnet.
Parallel rays passing through a converging lens and meeting at the principal focus.
A linear molecule: carbon joined to two oxygen atoms by double covalent bonds.
The first alkene, with a carbon–carbon double bond and a flat shape.
The first alkyne, with a carbon–carbon triple bond and a straight-line shape.
Two carbon atoms with an –OH (alcohol) functional group.
Six carbon atoms joined in a ring, each carrying two hydrogen atoms.
Every carbon atom bonded to four others in a rigid 3D network.
White light splitting into seven colours (VIBGYOR) as it passes through a prism.
Nitrogen bonded to three hydrogen atoms in a trigonal pyramid.
A single polar covalent bond between hydrogen and chlorine.
A flat six-carbon ring with alternating double bonds.
Two carbons with a –COOH carboxylic acid group.
A three-carbon saturated chain.
Four carbon atoms in a straight chain.
Branched isomer of butane.
Layers of hexagonal carbon rings stacked loosely.
Sixty carbon atoms arranged like a football.
Ionic lattice of Mg²⁺ and O²⁻ ions.
One Ca²⁺ ion for every two Cl⁻ ions.
Parallel rays reflecting through the principal focus.
Parallel rays diverging as if from the focus.
A circuit with resistors in series and in parallel.
Circular field lines around a straight current-carrying wire.
Field lines around a current-carrying circular coil.
A cone with radius r, height h and slant height l.
Maths
A cylinder of radius r and height h.
A perfectly round solid of radius r.
Half of a sphere.
A cone with its top cut off parallel to the base.
A box with length l, breadth b and height h.
A combined solid like a toy top.
Two triangles with equal angles and proportional sides.
A tangent touching the circle at one point.
A right triangle inside a unit circle.
Earth with the grid of latitudes and longitudes.
Social Science
