Final answer:
Viscosity is a property of fluids that measures its resistance to flow. It is influenced by factors such as intermolecular interactions, molecular size, and temperature. Motor oils and syrup are examples of fluids with different viscosities.
Step-by-step explanation:
Viscosity is a property of fluids that measures its resistance to flow. It is influenced by factors such as intermolecular interactions, molecular size, and temperature. Liquids with strong intermolecular forces or longer, more flexible molecules tend to have higher viscosities.
For example, motor oils need to maintain an optimal viscosity to effectively lubricate the engine under different temperature conditions. Higher temperatures increase the kinetic energy of the oil molecules, reducing viscosity and potentially impacting lubrication. On the other hand, syrup has high viscosity due to its long-chain molecules.
The SI unit of viscosity is the Pascal-second (Pa·s), and its measurements vary significantly across different fluids and often depend on temperature.