Charles's Law states that the volume of a gas is directly proportional to its temperature (in Kelvin) when pressure is held constant. So, the correct responses that reflect the direct relationship between volume and temperature are:
- As temperature increases, volume increases.
- As temperature decreases, volume decreases.
- As volume increases, temperature increases.
Therefore, the correct answers to check are:
- As temperature increases, volume increases.
- As temperature decreases, volume decreases.
- As volume increases, temperature increases.