7. If T is constant and P increases, what happens to V? square 8. What is the name of the gas law when T is constant and P and V are given and solved? square 9. If P is constant and V increases, what happens to T? square 10. What type of relationship does P and T have when V is consta

V decreases.<br /><br />8. What is the name of the gas law when T is constant and P and V are given and solved?<br />$\square $<br />【Explanation】: The gas law that describes the relationship between pressure (P) and volume (V) when temperature (T) is constant is known as Boyle's Law. Boyle's Law states that the pressure of a gas is inversely proportional to its volume when the temperature is held constant.<br />【Answer】: Boyle's Law.<br /><br />9. If P is constant and V increases, what happens to T?<br />$\square $<br />【Explanation】: According to Charles's Law, if the pressure (P) is constant and the volume (V) of a gas increases, the temperature (T) of the gas also increases. This is because as the volume increases, the gas particles have more space to move around, which results in an increase in temperature.<br />【Answer】: T increases.<br /><br />10. What type of relationship does P and T have when V is constant?<br />$\square $<br />【Explanation】: According to Gay-Lussac's Law, when the volume (V) is constant, the pressure (P) of a gas is directly proportional to its temperature (T). This means that as the temperature increases, the pressure also increases, and as the temperature decreases, the pressure also decreases.<br />【Answer】: Direct relationship.