January 2018 NY Regents Chemistry Exam 43 The arrangement of particles is most ordered in a sample of (1) NaCl(aq) (2) NaCl(l) (3)...

January 2018 NY Regents Chemistry Exam 41 Given the key: Which particle model diagram represents a chemical change? Solution: A chemical...

January 2018 NY Regents Chemistry 14 Which substance can not be broken down by a chemical change? (1) ammonia (2) ethanol (3) tungsten...

January 2018 NY Regents Chemistry Exam 8 Ice, H2O(s), is classified as (1) an ionic compound (2) a molecular compound (3) a homogeneous...

January 2018 NY Regents Chemistry Exam 7 Chemical properties can be used to (1) determine the temperature of a substance (2) determine...

August 2018 NY Regents Chemistry 9 Which statement describes H2O(l) and H2O2(l)? (1) Both are compounds that have the same properties....

August 2018 NY Regents Chemistry 8 Which substance can be broken down by chemical means? (1) ammonia (2) aluminum (3) antimony (4) argon...

January 2019 NY Regents Chemistry Exam 39 A mixture consists of ethanol and water. Some properties of ethanol and water are given in the...

January 2019 NY Regents Chemistry exam 14 Which substance can not be decomposed by chemical means? (1) C (2) CO (3) CO2 (4) C3O2...

August 2019 Regents Chemistry Exam 37 Which particle diagram represents a sample of oxygen gas at STP? Solution: Oxygen is diatomic (a...