what are three chemical characteristics and ten physical characteristics

so far for physical i have
-color
-taste
-smell
-size
-luster
-shape
-texture

is this what they are asking for?

For physical, yes.

okay and i don't understand what they are asking for for chemical characteristics.

i was thinking like density, melting point, and boiling point but arent those physical too?

Yes, you are on the right track with the physical characteristics. Here are a few more examples to complete your list of ten physical characteristics:

6. Melting point: The temperature at which a substance changes from a solid to a liquid state.
7. Boiling point: The temperature at which a substance changes from a liquid to a gaseous state.
8. Density: The amount of mass per unit volume of a substance.
9. Solubility: The ability of a substance to dissolve in a particular solvent.
10. Conductivity: The ability of a substance to conduct heat or electricity.
11. Magnetism: The ability of a substance to be attracted by a magnetic field.
12. Hardness: The resistance of a substance to being scratched or dented.
13. Opacity: The degree to which a substance allows light to pass through it.
14. Viscosity: The resistance of a substance to flow.
15. Flexibility: The ability of a substance to bend or deform without breaking.

Now, moving on to chemical characteristics, these are related to the composition and behavior of a substance at the molecular level. Here are three examples of chemical characteristics:

1. Reactivity: The degree to which a substance can undergo chemical changes and participate in chemical reactions.
2. Stability: The ability of a substance to resist undergoing chemical changes.
3. Flammability: The tendency of a substance to ignite and burn in the presence of a flame.

These are just a few examples of chemical characteristics. Keep in mind that there are many more factors that can be considered, depending on the specific substance or context.