Exam 1 Flashcards
(78 cards)
1
Q
matter def
A
mass and volume
2
Q
scientific method
A
observation, hypohthesis, experimemnt, theory (or model), further experiments
3
Q
mixture def
A
two or more substances that are physically mixed
4
Q
intensive property def
A
not dependent on volume
5
Q
extensive property def
A
dependent on volume
6
Q
tera
A
10^12
7
Q
giga
A
10^9
8
Q
mega
A
10^6
9
Q
kilo
A
1000
10
Q
centi
A
0.01
11
Q
milli
A
0.001
12
Q
micro
A
10^-6
13
Q
nano
A
10^-9
14
Q
pico
A
10^-12
15
Q
compound def
A
two different elements combined- can not be broken physically
16
Q
temperature intensive or extensive
A
intensive
17
Q
solubility intensive or extensive
A
intensive
18
Q
melting and boiling point intensive or extensive
A
intensive
19
Q
mass and volume intensive or extensive
A
extensive
20
Q
celcius to kelvin
A
k=c+273.15
21
Q
Density equation
A
D=m/v
22
Q
density units for solids and liquids
A
g/cm^3
23
Q
density units for gas
A
g/L
24
Q
adding and subtracting sig figs
A
least number of decimal places
25
multiplying and dividing sig figs
least number of sig figs
26
chemical property def
property observed when a substance changes to form new substances
27
physical change def
only change appearence
28
chemical change def
any reaction
29
metric units
liter, gram, C
30
SI units
cubic meter, kilogram, kelvin
31
solids shape and volume
definite shape and volume
32
liquids shape and volume
definite volume, no definite shape
33
gases shape and volume
no definite shape or volume
34
heterogenous mixture
you can see stuff in it
35
homogeneous mixture
you cant see the barriers between the items
36
how is a mixture separated
physically
37
precision def
answers are close to each other
38
accuracy def
answers agree with correct value
39
protons and neutrons mass
1 amu
40
Atomic number (Z) def
the number of protons in an atom
41
mass number (A) def
number of protons+neutrons
42
isotope def
atoms with different numbers of neutrons
43
ion def
a charged atom
44
name for a positive ion
cation
45
name for a negative ion
anion
46
atomic mass def
Weighted average of each isotope of an element
47
period def
row of periodic table
48
groups def
column of periodic table
49
type of element found in group 1A
alkali metals
50
type of element found in group 2A
alkaline earth metals
51
type of element found in group 8A
noble gases
52
type of element found in group 7A
halogens
53
1 mole=(avagadros number)
6.02x10^23
54
molar mass (g/mol) def
the mass in grams of one mole of the substance
55
moles=
mass/molar mass
56
electromagnetic spectrum
raging monsters invade venus using xray guns (red-blue)
57
frequency(nu) def
number of waves that pass through a point in 1 second
58
wavelength(λ)
distance from crest to crest of the waves
59
Amplitude
the distance between the mid-line of a wave to either crest
60
c=λv
speed of light=wavelength x frequency
61
speed of light=
3.00x10^8 m/s
62
blackbody radiation def
when a solid is heated under certain conditions it glows
63
photoelectric effect def
when a metal surface si exposed to light sometimes electrons are emitted
64
bohr's model line spectra
when atoms are exposed to energy at specific wavelengths they emit visible light
65
heisenberg uncertainty
we can either know where a subatomic particle is or how fast is is going but not both at the same time
66
principal quantum number (n)-usually 1-7
tells us how far we are from the nucleus as well as the size of the orbital
67
angular momentum quantum number (l)
describes the shape of the orbital
68
l=0
s orbital, sphere
69
l=1
p orbital, dumbbell
70
l=2
d orbital, clover
71
l=3 f orbital
72
electron spin quantum number (m sub s)
describes the spin of the electron either 1/2 or -1/2
73
magnetic quantum number (m sub l)
describes the orientation of the orbital in space
74
energy levels of orbitals
s
75
of electrons in d orbital
10
76
of electrons in f orbital
14
77
of electrons in porbital
6
78
of electrons in s orbital
2
