Examlex
An indicator is a weak acid that is one color in its protonated form and another color in its deprotonated form.
Heart Motion
The movement of the heart as it contracts and relaxes to pump blood throughout the body.
PVC
Polyvinyl chloride, a synthetic plastic polymer used in a wide variety of applications, from piping and clothing to furniture and signage.
ECG
Electrocardiogram, a medical test that records the electrical activity of the heart over a period of time using electrodes placed on the skin.
Wave
A wave is a disturbance that transfers energy through space and matter, often described by its amplitude, wavelength, frequency, and speed.
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