NY Regents Chemistry Exam August 2023 Question 10
10 A compound consists of two or more different elements that are
(1) physically mixed in a fixed proportion
(2) physically mixed in a proportion that can vary
(3) chemically combined in a fixed proportion
(4) chemically combined in a proportion that can
vary
Solution: We need to memorize the definition of a compound. A compound consists of two or more different elements that are chemically combined in a fixed proportion.(3) Examples of compounds are: H2O, CO2
Contact us for Chemistry Tutoring: HERE