what is a constant in science

In science, a constant is a quantity or factor that is intentionally kept the same or unchanged during an experiment. Constants are important in scientific experiments because they help ensure that the results are accurate and reliable. They are used to establish a baseline or standard for comparison with other variables that are being tested. Constants can be physical quantities such as temperature, humidity, pressure, duration of the experiment, sample volume, or chemical purity. Constants can also be natural forces or properties such as the speed of light or the atomic weight of gold. In summary, constants are factors that remain unchanged during an experiment and are used to ensure that the results are accurate and reliable.