Here are the correct matches:
A. The mass of an object divided by its volume - 4. Density
B. The temperature at which something freezes - 2. Freezing point
C. The temperature at which something boils - 6. Boiling point
D. The ability to attract iron - 1. Magnetic
E. The amount of matter in an object - 5. Mass
F. The space something occupies - 3. Volume