, type I naming
none metals
metalliods
t
> 3d
IS 2+ 4 3- 2-
↳
- -
25
35 + 3+
2+
45
5S
6s
75
4f
Sf
,Chapter / Measurements
macroscopic :
easily determined
(by eyes)
UNIT
microscopic
atomic/molecular
scale
mass the amount
of matter in
an object
weight the force
that exerts
gravity NUMBER
on an object
Volume : m = SI UNIT Density kg/m3 =SI: UNIT
3
dm3 L L d
M
m
3 2
.No &
= =
2x10
S
3
cm3 = mL
conversions are sim
to
&
· decreases with temp
no = ko !! Temperature : K = SI UNIT · doesn't depend on the quan
zero K
on scale of mass .
present
is the lowest k= 20 + 273 . 15
temp attained
theoretically
to 2 dL CL mL m3 dm3 cm3 mm3
sure
up :
Step = X+ 10 Step =- 103
, Numbers
Handling
scientific notation
formula Addition Subtraction :
Multiplication :
mxion unit the exponent the coefficients
· ·
multiply
· combine the coefficient · add exponents
coefficient :
m= 1 -
9 Division :
uncertainty depends on the d
divide coefficients used for measurement . (e
g 6m
· . .
exponent : · subtract exponents is uncertain it could be express
,
n=
integer as (611 mL)
Significant figures rules.
significant figure : · all numbers are
Significant EXCEPT.. Leading zeros 0
-
. 0034
number of impo ·
Trailing zeros count if there's decimal a 0 .
430 nosf SF
F
single digits
10-9) in the
coefficient Indicates . Addition/Subtraction :
the precision
. · answer depends on least decimal place
more SFs 89 332-3 decimal
.
places
more
precision
. t 1 .
1
432
·decimal place
90 .
Exact nu . the answer is 90 4 ·
have their values
known e g . .
12kg Multiplication Division :
· answer depends on smallest num . of SF
Inexact nu
.
4 31x3 666 16 5
have uncertainty 16 53366
.
.
= .
=
.
in their values ⑮ 45f
e 12
.
g
.
Difference between accuracy and
precision
600 X
. 0x102 -ISF
6
. 00 X
6 102 3 SF
Accuracy
:nowcloseameasurem
Precision : how close 2 or more
with anothe
agree one ·
add/sub : depends on decimal places
mult/divi depends : on num of SF
zeros : count when there's a decimal (except leading .
zeros)
none metals
metalliods
t
> 3d
IS 2+ 4 3- 2-
↳
- -
25
35 + 3+
2+
45
5S
6s
75
4f
Sf
,Chapter / Measurements
macroscopic :
easily determined
(by eyes)
UNIT
microscopic
atomic/molecular
scale
mass the amount
of matter in
an object
weight the force
that exerts
gravity NUMBER
on an object
Volume : m = SI UNIT Density kg/m3 =SI: UNIT
3
dm3 L L d
M
m
3 2
.No &
= =
2x10
S
3
cm3 = mL
conversions are sim
to
&
· decreases with temp
no = ko !! Temperature : K = SI UNIT · doesn't depend on the quan
zero K
on scale of mass .
present
is the lowest k= 20 + 273 . 15
temp attained
theoretically
to 2 dL CL mL m3 dm3 cm3 mm3
sure
up :
Step = X+ 10 Step =- 103
, Numbers
Handling
scientific notation
formula Addition Subtraction :
Multiplication :
mxion unit the exponent the coefficients
· ·
multiply
· combine the coefficient · add exponents
coefficient :
m= 1 -
9 Division :
uncertainty depends on the d
divide coefficients used for measurement . (e
g 6m
· . .
exponent : · subtract exponents is uncertain it could be express
,
n=
integer as (611 mL)
Significant figures rules.
significant figure : · all numbers are
Significant EXCEPT.. Leading zeros 0
-
. 0034
number of impo ·
Trailing zeros count if there's decimal a 0 .
430 nosf SF
F
single digits
10-9) in the
coefficient Indicates . Addition/Subtraction :
the precision
. · answer depends on least decimal place
more SFs 89 332-3 decimal
.
places
more
precision
. t 1 .
1
432
·decimal place
90 .
Exact nu . the answer is 90 4 ·
have their values
known e g . .
12kg Multiplication Division :
· answer depends on smallest num . of SF
Inexact nu
.
4 31x3 666 16 5
have uncertainty 16 53366
.
.
= .
=
.
in their values ⑮ 45f
e 12
.
g
.
Difference between accuracy and
precision
600 X
. 0x102 -ISF
6
. 00 X
6 102 3 SF
Accuracy
:nowcloseameasurem
Precision : how close 2 or more
with anothe
agree one ·
add/sub : depends on decimal places
mult/divi depends : on num of SF
zeros : count when there's a decimal (except leading .
zeros)
