Which of these correctly describes the layer of Earth that has the highest temperatures? The crust is the hottest because it is closest to the Sun.

The mantle is the hottest because it is the thickest layer.

The outer core is the hottest because it is composed of liquid rock.

The inner core is the hottest because it is under the most pressure.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa