Videos
(a)
Interpretation:
Shredding of newspaper has to be classified as a chemical or physical change.
Concept Introduction:
In matter, changes are familiar and common occurrences. Similar to the properties of matter, changes in matter can also be classified as physical change and chemical change.
Process in which, the physical appearance of the substance changes but not the chemical composition is known as physical change. Some of the examples are melting, freezing, evaporation etc.
Process in which, the chemical composition of the substance changes is known as chemical change. All
(b)
Interpretation:
Solidification of molten wax has to be classified as a chemical or physical change.
Concept Introduction:
In matter, changes are familiar and common occurrences. Similar to the properties of matter, changes in matter can also be classified as physical change and chemical change.
Process in which, the physical appearance of the substance changes but not the chemical composition is known as physical change. Some of the examples are melting, freezing, evaporation etc.
Process in which, the chemical composition of the substance changes is known as chemical change. All chemical reactions are examples of chemical change because the composition changes.
(c)
Interpretation:
Unrefrigerated container of milk sours has to be classified as a chemical or physical change.
Concept Introduction:
In matter, changes are familiar and common occurrences. Similar to the properties of matter, changes in matter can also be classified as physical change and chemical change.
Process in which, the physical appearance of the substance changes but not the chemical composition is known as physical change. Some of the examples are melting, freezing, evaporation etc.
Process in which, the chemical composition of the substance changes is known as chemical change. All chemical reactions are examples of chemical change because the composition changes.
(d)
Interpretation:
Trimming of finger nails has to be classified as a chemical or physical change.
Concept Introduction:
In matter, changes are familiar and common occurrences. Similar to the properties of matter, changes in matter can also be classified as physical change and chemical change.
Process in which, the physical appearance of the substance changes but not the chemical composition is known as physical change. Some of the examples are melting, freezing, evaporation etc.
Process in which, the chemical composition of the substance changes is known as chemical change. All chemical reactions are examples of chemical change because the composition changes.
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Chapter 1 Solutions
General, Organic, and Biological Chemistry
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- The photo below shows elemental iodine dissolving in ethanol to give a solution. Is this a physical or chemical change?arrow_forwardThe following statements are best associated with the solid, liquid, or gaseous states of matter. Match the statements to the appropriate state of matter. a. This state is characterized by the lowest density of the three. b. This state is characterized by an indefinite shape and a high density. c. In this state, disruptive forces prevail over cohesive forces. d. In this state, cohesive forces are most dominant.arrow_forwardDescribe how a homogeneous mixture differs from a heterogeneous mixture.arrow_forward
- Classify each of the following changes as physical or chemical: a. the burning of butane in a lighter b. the freezing of water c. the bending of a copper rod d. the fading of a brightly colored cloth upon excessive exposure to sunlightarrow_forward1.13 Physical properties may change because of a chemical change. For example, the color of an egg white changes from clear to white because of a chemical change when it is cooked. What is another common situation in which a chemical change also leads to a physical change?arrow_forwardDescribe how the process offiltrationcould be used to separate a mixture into its components. Give an example.arrow_forward
- Classify each of the following properties as chemical or physical: a. the tendency of dry ice to vaporize directly from a solid to a gas b. the flammability of LP gas (the kind you put your outdoor grill) c. the boiling point of water d. the smell of colognearrow_forwardClassify each of the following properties as chemical or physical: a. the tendency of silver to tarnish b. the flammability of alcohol c. the volatility (ease of vaporization) of alcohol d. the malleability (ability to be pounded into sheets) of metalarrow_forward
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