vocab for unit 1-3

studied byStudied by 0 people
0.0(0)
Get a hint
Hint

base unit

1 / 51

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

52 Terms

1

base unit

describes one type of quantity to be measured/describes

New cards
2

preciseness

amount of uncertainty in a measurement - more decimals/ sig figs

New cards
3

accurateness

how close you are to an accepted value

New cards
4

absolute uncertainty

the actual uncertainty in the value

New cards
5

relative uncertainty

amount of uncertainty compared to amount measured

New cards
6

derived unit

combines 2 units

New cards
7

unitary rate

denominator of 1

New cards
8

classification

How things are divided by their characteristics

New cards
9

Interpretation

any knowledge obtained indirectly to explain the process or substance

New cards
10

inference

A conclusion reached on the basis of evidence and reasoning

New cards
11

hypothesis

preliminary concept that has to be proved before being accepted

New cards
12

theory

accepted explanation - principles that can expalin a large number of observations

New cards
13

model

diagram used to simplify abstract idea

New cards
14

matter

has mass and occupies space

New cards
15

volume

The amount of space an substance takes up

New cards
16

mass

the amount of matter in an object

New cards
17

Qualitative

characteristics obtained descriptively

New cards
18

Quantative

characteristics obtained from measurement

New cards
19

intensive property

doesn't depend on the amount of matter

New cards
20

extensive property

a property that depends on the amount of matter in a sample

New cards
21

Lustre

how substance reflects light - shiny or dull

New cards
22

melting point

The temperature at which a solid becomes a liquid

New cards
23

freezing point

The temperature at which a liquid changes into a solid

New cards
24

boiling point

The temperature at which a liquid changes to a gas

New cards
25

solubility

the concentration of a saturated solution of a solute in solvent - ability of solid to dissolve in solvent. how mcuh can dissolve before no more can dissolve

New cards
26

Conductivity

ability of substance to conduct an electric current

New cards
27

potential energy

stored energy; depends on relative positioning of particles

New cards
28

kinetic energy

related to motion of particles

New cards
29

pure substance

A homogenous sample of matter, either a single element or a single compound, that has definite chemical and physical properties

New cards
30

mixture

A combination of two or more pure substances combined

New cards
31

element

A pure substance made of only one kind of atom, cannot be broken down

New cards
32

compound

A pure substance made up of atoms of two or more different elements in a fixed proprtion, can be broken down by heat or electricity

New cards
33

solution

a homogenous mixture of two or more substances uniformly dispersed throughout a single phase

New cards
34

suspension

heterogeneous mixture where solid particles are dispersed in a liquid or gas but are not dissolved

New cards
35

homogenous

uniform composition, one phase

New cards
36

heterogenous

diff components observed, not uniform, more than 1 phase

New cards
37

mechanical mixture

diff kinds of matter visible in a mixture

New cards
38

distillation

A process that separates the substances in a solution based on their boiling points. evaporation --> condensation of vapours. In distillation, the mixture is heated, causing the liquid with the lowest boiling point to vaporize, which is then directed into a condenser where it cools, condenses back into a liquid, and is collected separately, leaving behind the remaining components.

New cards
39

Fractional distillation

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

New cards
40

Mechanical

phsyically separation without altering chemical properties

New cards
41

settling

heavier/denser particles sink

New cards
42

Floatation

Use when one component of a mixture floats and the other sinks in a liquid

New cards
43

Filtration

separates low solubility solid from liquid using filter

New cards
44

extraction

isolate a specific substance from a mixture by utilizing the differences in solubility between the components. The process typically involves mixing the substance with a solvent in which one or more components dissolve while others do not.

New cards
45

Crystallization

getting a solid by evaporating solvent or cooling concentrated solution

New cards
46

Chromatography

based on the how they travel across stationary thing, diff chemical properties

New cards
47

law of definite proportion

The proportion of elements in compound is always the same.

New cards
48

law of multiple proportions

different compounds made up of the same elements differ in the number of atoms of each kind that combine

New cards
49

atoms

smallest part of element that is representative of element, made up of neutrons protons and electrons

New cards
50

ions

particle or group of partices w positive or negative charge

New cards
51

molecules

particle conatning fixed # of covalently bonded non metal atoms

New cards
52

formula units

smallest amt of substance hat has composition given by ionic formula

New cards

Explore top notes

note Note
studied byStudied by 63 people
... ago
5.0(4)
note Note
studied byStudied by 71 people
... ago
5.0(1)
note Note
studied byStudied by 25 people
... ago
5.0(1)
note Note
studied byStudied by 18 people
... ago
5.0(1)
note Note
studied byStudied by 110 people
... ago
5.0(2)
note Note
studied byStudied by 11 people
... ago
5.0(1)
note Note
studied byStudied by 22 people
... ago
5.0(1)
note Note
studied byStudied by 178 people
... ago
4.5(4)

Explore top flashcards

flashcards Flashcard (166)
studied byStudied by 10 people
... ago
5.0(1)
flashcards Flashcard (91)
studied byStudied by 23 people
... ago
5.0(1)
flashcards Flashcard (24)
studied byStudied by 5 people
... ago
5.0(1)
flashcards Flashcard (58)
studied byStudied by 20 people
... ago
5.0(1)
flashcards Flashcard (48)
studied byStudied by 76 people
... ago
5.0(1)
flashcards Flashcard (31)
studied byStudied by 2 people
... ago
5.0(1)
flashcards Flashcard (173)
studied byStudied by 2 people
... ago
5.0(1)
flashcards Flashcard (40)
studied byStudied by 5 people
... ago
5.0(1)
robot