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Chem 211 > 1.1 Some fundamental definitions > Flashcards

1.1 Some fundamental definitions Flashcards

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1
Q

What is the definition of: Chemistry

A

The scientific study of matter and its properties, the changes that matter undergoes and the energy associated with those changes

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2
Q

What is the definition of: Matter

A

Anything that has mass and volume

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3
Q

What is the definition of: Composition

A

The types and amounts of simpler substances that create something of greater complexity

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4
Q

What is the definition of: Substance

A

A type of matter that has a defined, fixed composition

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5
Q

What is the definition of: Solid

A

Has a fixed shape and does NOT conform to its container

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6
Q

What is the definition of: Liquid

A

A substance that has varying shape that conforms to its container to the extent of the liquids volume

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7
Q

What is the definition of: Gas

A

A substance that has varying shape that conforms and fills it’s container

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8
Q

What is the definition of: Properties

A

The characteristics that give each substance its unique identity

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9
Q

What is the definition of: Physical properties

A

Characteristics a substance shows by itself, without changing into or interacting with another substance

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10
Q

What is the definition of: Physical change

A

When a substance alters its physical properties, not its composition

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11
Q

What is the definition of: Chemical properties

A

Characteristics a substance shows as it changes into or interacts with another substance

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12
Q

What is the definition of: Chemical change/reaction

A

When one or more substance is converted into one or more substance with different composition and properties

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13
Q

What is the definition of: Energy

A

The ability to do work

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14
Q

What is the definition of: Potential energy

A

Energy due to spatial positioning

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15
Q

What is the definition of: Kinetic energy

A

Energy due to movement

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16
Q

What are 2 key concepts of energy

A
  1. Energy is never created nor destroyed, only converted

2. Systems of lower energy are favored and more stable than systems with a higher energy

Chem 211 (4 decks)

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