It's a bit tricky to pinpoint exactly *seven* properties that apply to all metals, as there is some variation. However, here are some of the most common and important properties associated with metals:

1. Luster: Metals are shiny, reflecting light well.

2. Malleability: They can be hammered or pressed into thin sheets without breaking.

3. Ductility: They can be drawn into wires.

4. Good conductors of heat: Heat travels easily through metals.

5. Good conductors of electricity: Electricity flows easily through metals.

6. High density: Metals are generally dense, meaning they have a lot of mass packed into a small volume.

7. Solid at room temperature (except mercury): Mercury is the only metal that is liquid at room temperature.

Let me know if you'd like more detail on any of these properties!