Assertion: chemical | /r/HasProperty | pure substance
Facets:
value: according to this definition
type: OTHER
value: often
type: TEMPORAL
value: to set them
type: PURPOSE
Source sentences:
text: A chemical is any pure substance (an element) or any mixture (a solution, compound, or gas).
text: Chemical substances are often called 'pure' to set them apart from mixtures.
text: According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound.
text: According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound.