Identify two physical properties and two chemical properties of matter

Physical Properties: color, density, volume, mass, boiling point, melting point

Chemical Properties: flammability, toxicity, acidity, reactivity, heat of combustion

Explanation:

Physical properties can be measured without changing a substance’s chemical identity.  

Chemical properties can be measured only by changing a substance’s chemical identity.

Sorry for the long answers, I wanted to give you options to pick from! Hope this helps!

physical - color, and density

chemical - combustion, toxicity

Explanation:

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.