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