Chemical bonds do not store energy. Chemical bonds certainly contain potential energy, and the atoms want to move to a lower potential energy (become more stable). When methane, #CH_4#, forms, the valence electrons end up in more stable (lower energy) C-H bonds. These bonds are fairly strong, so methane is relatively inert.
Not to be confused with the secondary tympanic membrane of the round window. In human anatomy, the eardrum, or tympanic membrane, is a thin, cone-shaped membrane that separates the external ear from the middle ear in humans and other tetrapods. Its function is to transmit sound from the air to the ossicles inside the middle ear, and then to the oval window in the fluid-filled cochlea. Hence, it ultimately converts and amplifies vibration in air to vibration in fluid. The malleus bone bridges the gap between the eardrum and the other ossicles.
A perforated eardrum is when the thin membrane, called the tympanic membrane or eardrum, that separates the middle ear from the outer ear has a hole or tear in it. There are a number of possible causes, including:1  An infection in the middle ear. perforated eardrum is when the thin membrane, called the tympanic membrane or eardrum, that separates the middle ear from the outer ear has a hole or tear in it. There are a number of possible causes, including: