Module 1.7 Physical & Chemical Changes Flashcards

1
Q

A physical change is a change in the form of ?

A

Solid, Liquid, Gas, Solution
(but not its chemical composition)

Ex. Melting, Freezing, Boiling/Evaporation, Condensation, & Dissolving

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2
Q

A chemical change is a change in the

A

Composition of Matter

Ex. Burning/Combustion, Rusting/Oxidizing, an Explosion, & Baking

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3
Q

When a physical or temperature change occurs the matter

A

Remains as the same chemical substance

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4
Q

When a chemical change occurs the matter

A

Changes to a different chemical substance

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5
Q

Calorimetry

A

Is the study of how much heat is involved in a temperature or physical change

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6
Q

Thermochemistry

A

is the study of how much heat is involved in a chemical change

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7
Q

Exothermic

A

Heat is given off or extracted from the system as the changes take place

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8
Q

Endothermic

A

Heat is absorbed or added to the system as the change takes place

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9
Q

Melting ice to liquid water requires heat to be added, this process is called ?

A

Endothermic

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10
Q

Condensing steam to liquid water requires heat to be extracted, this process is called ?

A

Exothermic

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11
Q

Cooling liquid water from 25° to 20° requires heat to be extracted, this process is called

A

Exothermic

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12
Q

Burning natural gas gives off heat, this process is called

A

Exothermic

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