Heat means to become warm or hot.
Mass means a unified body of matter with no specific shape.
Density means the quantity of something per unit measure, especially per unit length, area, or volume.
Buoyancy means the ability of an object to float in water or air.
Conductor means a material or object that allows electricity or heat move thruogh it.
Insulator means a material that allows little or no heat, electricity, or sound to go through it.
Magnetism means the property of attracting certain metals: the attracting property of a magnet.