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Chem 105 > Chapter 1 > Flashcards

Chapter 1 Flashcards

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1
Q

what is chemistry the study of?

A

composition, properties, and interactions of matter

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2
Q

What is chemistry based on?

A

observations and experiminatation

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3
Q

What is a hypothesis?

A

A tentative explanation of observations that acts as a guide for gathering and checking information?

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4
Q

how do you test a hypothesis?

A

through experimentation

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5
Q

What are laws?

A

they summarize a vast number of experimental observations

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6
Q

What are theories?

A

well sustained, comprehensive, testable explanations of particular aspects of nature

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7
Q

what is the scientific method?

A

the path of discovery that leads from question and observation to law or hypothesis to theory combined with experimental verification of hypothesis

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8
Q

What is macroscopic?

A

What we can see

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9
Q

What is microscopic?

A

What we can’t see

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10
Q

What is symbolic domain?

A

contains the specialized language used to represent components of macroscopic and microscopic domains

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11
Q

What is matter?

A

anything that has mass

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12
Q

What are characteristics of solids?

A

rigid, and possess definite shape and volume

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13
Q

what are characteristics of liquids?

A

shape of the container but volume is definite

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14
Q

What are characteristics of gases?

A

No definite shape or volume

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15
Q

What are characteristics of plasma?

A

gaseous state of matter that contains appreciable numbers of electrically charged particles

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16
Q

What is weight?

A

the force that gravity exerts on an object

17
Q

What is the law of conservation of mass?

A

there is no detectable change in the total quality of matter when matter converts from one type to another or physical change

18
Q

What type of composition does a pure substance have?

A

constant

19
Q

What are properties?

A

Characteristics that distinguish one substance from another

20
Q

What is a physical property?

A

density, color, hardness, melting and bioling points, and electrical conductivity

21
Q

what are chemical properties?

A

the ability to change from one type of matter to another

22
Q

what is an extensive property?

A

property that depends on the amount

23
Q

what is an intensive property?

A

property of a sample of matter that does not depend on amount

24
Q

What is the formula for density?

A

mass/ volume

Chem 105 (22 decks)

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