Chapter 2 Quiz Flashcards Preview

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Flashcards in Chapter 2 Quiz Deck (41):
1

Define matter

Anything that has mass and takes up space

2

What can matter be described by?

its extensive and intensive properties

3

define extensive properties

depend on the amount of matter

4

define mass

the amount of matter that an object contains

5

define volume

amount of space taken up by an object

6

define intensive properties

depend on the type of matter in a sample not the amount of matter

7

what is included in intensive properties

physical properties (hardness, color, odor, conductivity, solubility, melting point, boiling point, and malleability)

8

define substance

matter that has a uniform and definite composition

9

all samples in substance have identical _______ properties

intensive

10

define physical property

-quality or condition of a substance that can be observed without changing the substances composition
-can be reversible (boiling water) and irreversible (cracking an egg)

11

All atoms are in _______ _____

constant motion

12

what are the states of matter?

gas, solid, liquid, plasma (also determines rate at which atoms move)

13

Solid

-definite shape & volume
-atoms vibrate in place
-slight expansion upon heating
-almost incompressable

14

liquid

-definite volume & indefinite shape
-atoms vibrate in place
-slight expansion upon heating
-almost incompressable

15

Gas

-indefinite shape and indefinite shape
-particles moving very rapidly
-great expansion upon heating
-readily compressable

16

define vapor

gaseous state of substance that is generally a liquid/solid at room temperature

17

define mixture

physical blend of 2+ substances

18

define phase

any part of a mixture with uniform composition and properties

19

define heterogeneous mixture

-not uniform in composition
-contains 2+ phases
EX: pizza

20

define homogeneous mixture

-completely uniform in composition
-AKA solution
-contians 1 phase
EX: kool aid

21

define suspension

(heterogeneous mixture) not uniform in composition
EX: muddy water

22

define solution

(homogeneous mixture) completely uniform composition
EX: vinegar, soda

23

define colloid

mixture of substances that normally mix together
EX: mayo, jello

24

name the methods of separating mixtures

-magnets: uses magnetism
-filter: separates particles from smaller ones
-distillation: uses boiling point
-chromatography: separation of mixtures by passing it through a suspension
-electrolysis: passing an electric current through a solution containing ions
-crystallization: transform into a crystal
-centrifuge: uses density

25

can elements be broken down into simpler substances by chemical means?

no

26

define compound

substance that contains 2+ elements chemically combined in fixed proportions

27

can compounds be separated? If so, how?

chemical means

28

properties of a compound are ___________ from those of their component elements

different
EX: sugar

29

complete a chart of classifying matter

Matter> substance> element & compound
> mixture of substances> homogeneous and heterogeneous mixture

30

define chemical symbol

1/2 representation of the element
-first letter is always CAPITALIZED
-second letter is always lowercase

31

define chemical reaction

1+ substances change into 1+ new substances

32

define reactant

starting substance

33

define product

the substances formed

34

identify possible clues to a chemical reaction

-transfer of energy
-change of color
-production of gas
-formation of precipitate (solid that forms from a liquid mixture)

35

define chemical properties

the ability of a substance to undergo a chemical change to form a new substance
EX: cooking

36

physical changes ____ result in a new substance
chemical changes result in a ___ substance

1. never
2. new

37

during any physical/chemical change, the mass of products is always ...

equal to the mass of the reactant

38

mass is neither ___ or ___

created, destroyed

39

define Law of Conservation of Mass

in any physical/chemical change, mass is conserved

40

are states of matter considered physical properties

yes

41

elements are the _________________ that can exist under normal lab conditions

simplest form of matter