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General Chemistry 1110 > Chapter 1 Notes > Flashcards

Chapter 1 Notes Flashcards

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1
Q

what is matter?

A

anything that has mass and takes up space.

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2
Q

what is Density?

A

mass over volume

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3
Q

physical property

A

observed and measured WITHOUT changing into another substance

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4
Q

examples of physical property

A

density, melting and boiling points.

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5
Q

Physical change

A

recognizable difference in the appearance

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6
Q

example of physical change

A

ice - water -steam

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7
Q

chemical property

A

observed through a chance in composition

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8
Q

examples of chemical property

A

toxicity, flammability, reactivity w/ oxygen, enthalpy of formation.

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9
Q

intensive property

A

independent of quantity (the amount of substance we are measuring)

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10
Q

extensive property

A

dependent of quantity (measuring the mass and volume & the value will depend how much substance you have)

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11
Q

what is an element

A

cannot be reduced or simplified and still exit the same properties and characteristics

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12
Q

what is a compound?

A

two or more elements defined as a ratio

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13
Q

what are compounds held by?

A

chemical bonds

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14
Q

what are the types of chemical bonds?

A

ionic and covalent bonds

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15
Q

neutral atom or molecule

A

can be present as neutral or ions

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16
Q

what kind of charge does neutral molecules have

A

no charge

17
Q

what kind of charge ions does have?

A

negative or postive charge

18
Q

how do ions become positive or negative charge?

A

the loss or gain of electrons

19
Q

What is chemical reaction?

A

conversion of one or more substance into one or more different substance
Also occurs at the level of the valence electrons

20
Q

what is a pure substance

A

element or compound

21
Q

mixture

A

homogenous and heterogeneous

22
Q

Homogenous mixture

A

same no matter where in mixture (completely mixed)

23
Q

heterogeneous mixture

A

difference in substance (Not completely mixed

24
Q

What is a solid?

A

particles very close defintie volume and shape

25
Q

liquid

A

particles somewhat close definite volume , but not shape

26
Q

gas

A

particles widely separated - no definite shape

27
Q

accuracy

A

degree of agreement between measurements and true value

28
Q

precision

A

measure of agreement between replicate measurements

General Chemistry 1110 (2 decks)

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