Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

chemistry 201 > ch1 > Flashcards

ch1 Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

Metric system

A
  • Mass is represented in gram (g), the length in meter (m) , and volume in liter (L)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

English system -

A

Weight is measured by the unit of pound (lb) , the length by the unit of yard (yd), and the volume by the unit of gallon (gal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

SI system

A

(International System). Based on the metric system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Metric system
? mm = 1 cm
? cm = 1 m
?m = 1 km

A

10 mm = 1 cm
100 cm = 1 m
1000m = 1 km

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The total number of digits used to express such a measurement is called the number of ..

A

significant figures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how many significant figures in exact number?

A

have an infinite number of significant figures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is an exact number?

A

Determined by counting and not by using a measuring device

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Zeroes in the middle (significant or not)?

A

significant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Zeroes at the beginning of a number (significant or not)?

A

not significant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Zeroes at the end of a number( significant or not)

A

significant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Mass is

A

is a measure of amount of matter in an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Volume is

A

is the amount of space occupied by an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

density is

A

an amount of mass is a given space (density=mass/volume)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Chemistry : is the study of

A

matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Chemistry

A

Its chemical and physical properties.

Chemical and physical changes it undergoes.

Energy changes of these processes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

matter is

A

Anything that occupies space and has mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

matter Exists in three states

A

Solid
Liquid
Gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

properties of a solid

A

Rigid
Fixed volume and shape
Slightly compressible

19
Q

properties of a solid

A

Rigid
Fixed volume and shape
Slightly compressible

20
Q

Properties of a Liquid

A

Definite volume
No specific shape (Assumes the shape of its container)
Slightly compressible

21
Q

Properties of a Gas

A

-No fixed volume or shape
(Takes on the shape and volume of its container)
-Highly compressible (Relatively easy to decrease the volume of a gas )

22
Q

The conversion of a substance from one state into another is known as

A

change of state.

23
Q

processes from solid to liquid

processes from liquid to gas

A

melting

evaporation

24
Q

gas to liquid called..

liquid to solid called..

A

condensation

freezing

25
Q

Physical Properties can be

A
  • measured or obtained without changing the composition of the material. like to separate a mixture into pure compounds, but it will not break compounds into elements.
  • no chemical changes
  • reversible
26
Q

examples of physical properties

A

mass- density- texture- volume- magnetism- length- color

27
Q

what are intensive and extensive properties?

A

Intensive Property : Independent of the quantity of substance (Ex: color, hardness, melting, boiling point, density)

Extensive Property: Depends on the quantity of the substance (Ex: mass, volume, length, weight)

28
Q

Separating mixture into pure compounds , changing physical properties by:

A

filtration - distillation - chromatography

29
Q

Chemical properties

A

-undergo chemical changes

30
Q

examples of chemical changes

A 
flammability
toxicity
rust with oxygen
react with finger and water
radioactivity
sensitivity to light
31
Q

chemical changes are

A
  • irreversible

- a given substance becomes a new substance with different properties and composition

32
Q

chemical reaction

A

is a process of rearranging, replacing, or adding atoms to generate a new substance

33
Q

Pure Substance:

A

Involves one component.

Sugar and water are pure substances.

A pure substance can be a 1chemical compound or 1 element

34
Q

do pure substance can decompose to other substance?

A

no they can’t decompose to other substances

34
Q

atom

A

is the smallest particle of an element that have the chemical properties of an element

35
Q

molecule

A

smallest unit of a compound, 2 or more atoms connected together
it can be the same atom like O2

36
Q

Chemical Element:

A

substancewhose atoms all have the same number of protons

36
Q

Chemical Compounds:

A

are composed of atoms chemically bonded to each other in fixed ratios and can be decomposed to those atoms

36
Q

matter

A

composed of tiny particles called atom

37
Q

mixture

A

more than one substance

38
Q

types of mixture

A

Homogeneous mixture (solution) and Heterogeneous mixture

39
Q

Heterogeneous mixture:

A

have many phases like sand in water - oil in water , non-uniform composition

40
Q

Homogeneous Mixture

A

have on phase , uniform composition like water and alcohol

chemistry 201 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions