Chapter 1: Changes And Matter Flashcards

(20 cards)

1
Q

Anything that has mass and takes up space

A

Matter

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2
Q

The smallest unit of an element that maintains the chemical identity of that element

A

Atom

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3
Q

A pure substance that cannot be broken down into simpler substances and is made of one type of atom

A

Element

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4
Q

A substantive that can be broken down into simpler substances. Each is made from the atoms of two or more elements that are chemically bonded

A

Compound

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5
Q

A characteristic that can be observed or measured without changing the identity

A

Physical property

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6
Q

A change in a substance that does not involve a change in identity of the substance

A

Physical change

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7
Q

Relates to a substances ability to undergo changes that transform into different substances

A

Chemical property

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8
Q

A change in which one or more substances are converted into different substances

A

Chemical change

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9
Q

A blend of two or more kinds of matter, each of which retains its own identity and properties

A

Mixture

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10
Q

Solution

A

Uniform in composition

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11
Q

Not uniform throughout

A

Heterogeneous

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12
Q

Has a fixed composition and differs from a mixture

A

Pure substance

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13
Q

A solid that forms from two liquids

A

Precipitate

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14
Q

Horizontal rows

A

Period

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15
Q

Vertical rows

A

Group

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16
Q

Soft - reactive with water - low density - not found free in nature

A

Alkali metals

17
Q

Reactive with acids - low density - not found free in nature

A

Alkaline metals

18
Q

Nonmetal - very reactive - all have colored gases - not found free in nature

19
Q

Nonmetal - nonreactive - low m.p. and b.p. - only found free in nature

20
Q

A measure of the amount of matter