Color, phase, odor and boiling point are the physical properties. Reactivity with oxygen depends on the chemical nature of object, thus, it is not a physical property. It is a chemical property.
7.20 it the energy because
10\7.26 is 7.20
- 70
26
-20
6
Well it's an alkali metal if that's what you're asking<span />
<span>If the concentration of H⁺ ions will decrease then the concentration of OH⁺ ions will increase.</span>
