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Chemistry > Chapter 1: Notes > Flashcards

Chapter 1: Notes Flashcards

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0
Q

chemical reaction. (how it reacted)

A

Chemical property

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1
Q

Can measure without changing the composition.

Smell,color,melting point

A

Physical property

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2
Q

A chemist mixes sodium with water and witnesses a violent reaction between metal and water. This is what?

A

an observation

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3
Q

What kind of change is wood burning?

A

Chemical change

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4
Q

What kind of change is iron rusting?

A

Chemical change

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5
Q

What kind of change is gasoline evaporating?

A

Physical change

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6
Q

What kind of property is rubbing alcohol’s density of 0.786 g/cm3?

A

Physical property

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7
Q

What kind of change is dynamite exploding?

A

Chemical change

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8
Q

What is the property of rubbing alcohol’s boiling point of 82.5 degrees C?

A

Physical Property

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9
Q

What is the property of rubbing alcohol’s flammability?

A

Chemical Change

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10
Q

What is the property of rubbing alcohol’s melting point?

A

Physical change

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11
Q

is composed of only one type of atom or molecule

A

pure substance

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12
Q

is a substance composed of 2 or more different types of atoms or molecules.

A

mixture

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13
Q

_____is a tentative interpretation or explanation of observations.

A

Hypothesis

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14
Q

______ is a model for nature that explains the underlying reasons for observations and laws

A

scientific theory

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15
Q

can not be chemical broken into simpler substances

A

element

16
Q

is composed of 2 or more elements in fixed proportions

A

compound

17
Q

________ has the same composition throughout

A

homogeneous

18
Q

______ has different composition in different regions.

A

heterogeneous

19
Q

______ are reported so that the number of digits reflect the uncertainty in the measurement.

A

Measured quantities

20
Q

_____ are the non-place holding digits in a reported number.

A

Sig Fig

Chemistry (6 decks)

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