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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

In each case, decide if the underlined property is a physical or chemical property.

  1. (a) The color of elemental bromine is orange-red.
  2. (b) Iron turns to rust in the presence of air and water.
  3. (c) Hydrogen can explode when ignited in air (Figure 1.16).
  4. (d) The density of titanium metal is 4.5 g/cm3.
  5. (e) Tin metal melts at 505 K.
  6. (f) Chlorophyll, a plant pigment, is green.

(a)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

Explanation

The orange-red indicates the color of the elemental bromine which states it...

(b)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

(c)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

(d)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

(e)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

(f)

Interpretation Introduction

Interpretation:

The given process should be decided as physical or chemical property.

Concept introduction:

Physical change:

A change in which the substance retains in form or state without altering in composition.  It is temporary and easily reversible.

Chemical change:

A change in which the substance loses its identity and produces one or more new substances by change in its composition.  It is permanent and not easily reversible.

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