⭐️Matter Flashcards

1
Q

Energy

A

The capacity to do work

ex. light energy, chemical energy, heat, mechanical and electrical, potential, kinetic

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2
Q

Phycial change/property

A

Characteristics of a substance that can be determined without changing the substance

ex. ** NaCl(salt)»»» NaCl (aq)
(add H2O)

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3
Q

Chemical change/property

A

Describes whether a substance reacts, or does not react, with other substances to form a NEW product
ex combustibility, tendency to corrode, rusting, any “react”

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4
Q

Extensive properties

A

Properties that depend on amount of matter

ex. Mass volume weight height

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5
Q

Intesive properties

A

properties that don’t depend on the amount of matter

ex. density odor taste color BP MP hardness ductility malleability

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6
Q

Pure Substance

A

Any variety of matter that has all identical properties CHEMICAL separation/combination

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7
Q

Elements

A

pure substance that cannot be broken down
building blocks of matter
(Metals/nonmetals)

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8
Q

Compounds

A

2+ different elements CHEMICALLY combined in definite proportions

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9
Q

Mixtures

A

Combination of two or more pure substances that keep their identities and properties

  • physically combined
  • no ratio
  • no bonds
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10
Q

Homogeneous mixtures

A
  • EVEN distribution constant ratio
  • PHYSICAL separation/combination
  • solution
  • dissolves (saltwater)
  • distillation=separating mixture by boiling points
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11
Q

Heterogeneous mixtures

A
•UNEVEN distribution
•PHYSICAL separation/combination
•filtration=straining to separate mixture
•definite boundaries
ex sand/water
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12
Q

Matter

A

Anything that has mass and occupies space

ex. air

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13
Q

Examples of homogeneous mixtures

A

Salt water, air

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14
Q

Examples of pure substances

A

Table salt, sodium, metal, sugar (elements and compounds)

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15
Q

How to tell if it’s water

A

Ph of 7, density, taste, waft, boils 100 freezes 0

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16
Q

Endothermic

A

Energy enters, bonds break

17
Q

Exothermic

A

Energy released, bonds form

18
Q

Law of conservation of energy

A

Energy neither created nor destroyed only changes form E=mc2 EINSTEIN

19
Q

Law of conservation of matter/mass

A

Matter/mass neither created nor destroyed only changes form LAVOISIER

20
Q

Aqueous

A

State of matter containing water as a solvent (aq)

21
Q

Properties of metal

A

Luster, good conductor, heat/electricity, malleable, ductile, “the force is strong”..high melting point MP/boiling point BP, hard
(Na, Ag, Au)

22
Q

Properties of nonmetals

A

Opposite of metals, brittle, dull

C, S, O