1. Density: This is the mass of a substance per unit volume. It's intensive because it doesn't change based on the amount of the substance you have. A small sample of gold has the same density as a large block of gold.
2. Boiling Point: The temperature at which a substance changes from a liquid to a gas. It's intensive because it remains the same regardless of the amount of the substance. Water boils at 100°C whether you have a teaspoon or a bathtub full.
3. Color: The way a substance appears to the human eye. It's intensive because the color of a substance doesn't change based on the amount of substance you have. A small piece of copper is still the same reddish-brown as a large copper sheet.