Physical or Chemical Change?1. H2OCI)→ H2O(g)2. NacI(s)→ Na +Caq) + Cl -Caq)1206Na+(aq) +OH-Caq3. NgOH(s)→ Na+ (aq) +OH - Caq)4. S(s)+ 02(g] → SOzCg)5. Nacs) t HZOM→Na+(aq) + OH-Caq) +HZ(g)3.

To determine whether the below change is a physical or chemical H2O(l) → H2O(g) NaCl(s) → Na+(aq) + Cl-(aq) NaOH(s) → Na+(aq) + OH-(aq) S(s) + O2(g) →SO2(g) Na(s) + H2O(l) →Na+(aq) + OH-(aq) + H2(g)A chemical change is defined as a change which involve breaking and making of bonds, formation of new product or change in the chemical composition. A physical change is the change in which there is no making or breaking of any bond, and where chemical composition remains as it is. The change of state of substance is a physical change.In 1st reaction: H2O(l) → H2O(g), the chemical composition remains same in initial and final state and only the state of water changes therefore it is a physical change.In 2nd reaction: NaCl(s) → Na+(aq) + Cl-(aq), the solid NaCl dissociates into its ions by breaking the electrostatic force in the NaCl therefore it is a chemical change.In 3rd reaction: NaOH(s) → Na+(aq) + OH-(aq), the solid NaOH(s), the solid NaOH(s) dissociate into Na+ and OH- by breaking the electrostatic force in NaOH therefore it is a chemical change.In 4th reaction: S(s) + O2(g) →SO2(g), the S combines with O2 to form new product. Since it includes formation of new product therefore it is a chemical change.In 5th reaction: Na(s) + H2O(l) →Na+(aq) + OH-(aq) + H2(g), there is formation of new product H2 therefore it is a chemical change.Physical change: H2O(l) → H2O(g) Chemical change: NaCl(s) → Na+(aq) + Cl-(aq) Chemical change: NaOH(s) → Na+(aq) + OH-(aq) Chemical change: S(s) + O2(g) →SO2(g) Chemical change: Na(s) + H2O(l) →Na+(aq) + OH-(aq) + H2(g)

Answered: Physical or Chemical Change? 1. H2OCI)…

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Physical or Chemical Change? 1. H2OCI) H2O(g) 2. NacI(s)→ Na+Caq) + CI -Caq) 3. NaOH(s)→Na+ (aq) +OH - Caq) 4. S(s)+ 02(g) - SOzcg) 5. Nacs) + H2OC1) →Na+Caq) + OH-Cag) * HZCg)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Physical or Chemical Change?
1. H2OCI)→ H2O(g)
2. NacI(s)→ Na +Caq) + Cl -Caq)
1206
Na+(aq) +OH-Caq
3. NgOH(s)→ Na+ (aq) +OH - Caq)
4. S(s)+ 02(g] → SOzCg)
5. Nacs) t HZOM→Na+(aq) + OH-Caq) +HZ(g)
3.

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