Question

what is Specific, physical characteristics that can be observed using senses.

Answer 1

Those are called observable (or sensory) physical properties — often referred to as qualitative observations. They are specific physical characteristics you can detect with your senses (sight, touch, smell, taste, hearing).

Common examples:
- Color
- Shape and form
- Size/appearance (when not measured precisely)
- Texture (smooth, rough)
- Odor
- Taste (with safety caveat)
- Luster/shininess
- Sound when tapped (hollow, dull)
- Temperature by touch (hot/cold)

Note: Some physical properties can be quantitative (measured numerically), like mass, length, melting point, and boiling point; those complement qualitative, sensory observations.