Chapter 1: Changes And Matter Flashcards Preview

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Flashcards in Chapter 1: Changes And Matter Deck (20):
1

Anything that has mass and takes up space

Matter

2

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

Atom

3

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

Element

4

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

Compound

5

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

Physical property

6

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

Physical change

7

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

Chemical property

8

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

Chemical change

9

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

Mixture

10

Solution

Uniform in composition

11

Not uniform throughout

Heterogeneous

12

Has a fixed composition and differs from a mixture

Pure substance

13

A solid that forms from two liquids

Precipitate

14

Horizontal rows

Period

15

Vertical rows

Group

16

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

Alkali metals

17

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

Alkaline metals

18

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

Halogens

19

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

Noble gases

20

A measure of the amount of matter

Mass