Modern chemistry is based primarily on technological advances. natural philosophy. experimentation. philosophical speculations.

experimentation

Explanation:

During the 19th century, a long list of researchers laid the foundations that would lead to the further development of chemistry, a science of fundamental importance in many fields of knowledge, such as physics, materials science, biology, medicine, Geology or astronomy among others. It is considered one of the sciences that has most contributed to the development of civilization. Currently, chemistry develops as an empirical science, that is, it studies things through the scientific method, through observation, quantification and, specifically experimentation.

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

2b2t

explanation:

2b2t