Tests Questions Flashcards
n =
nano
dk =
deka
M =
mega
m =
milli
G =
billions
p =
pico
d =
deci
which one is the largest ..
k u T M
T - trillions
which one is the largest ?
p dk c m
dk
154.1dm ______km
.01541
0.44g = _____mg
.000 000 44
0.7Gm= ______hm
7 000 000
T or F:
an alpha particle is the same as a hydrogen nucleus -
False
T or F -
41 Ge -4 has 3 electrons.
32
true
T or F
it is rare for an element to have isotopes -
false
82 or more protons =
radioactive
T or F:
195 Pt & 196 Pt have same # of protons -
78 78
true
it’s found in the nucleus w/ positive charge -
proton
in the nucleus, no charge -
nucleus
orbits outside of nucleus, negative charge -
electron
changes in # of particle creates an ion -
proton & electrons
it identifies the element -
protons
changes in this causes an isotope -
neutrons
174 Yb —-> 4 He + _______ _____
70 2 _______
170 Er
68
he said electrons are found in a specific energy levels -
Bohr
Philosophers think I am wrong -
Democritus
all matter is made of atoms =
Dalton
light energy -
Max Plank
don’t know electrons exact location but the probability of it -
schrodinger and bohr
model is the same as daltons -
democritus
electrons move randomly around nucleus -
rutherford
he said that there is same amount of matter present after chemically reaction has happened as there was before -
Dalton
we can know electrons location & momentum -
heisengerg
wrote “something prinicples” -
heisenberg
he said electrons dont move around randomly -
Bohr
he said it’s a dense center ; mostly empty space -
rutherford
explain what will happen when an electron is hit w/ a photon that has 5 units of energy -
nothing will happen to the electron
describe ground state —-> excited state -
starts at ground state becomes heated & absorbs energy gets excited rises to higher energy level unstable releases energy back to ground state
T or F;
nobel gas = interia gas.
False
atomic radius from smallest to largest -
In , B , Ti
B , In , Ti
how to find valence electrons (2) -
group # - look at ones place
ask sister for d and f block
36 S
16
P =
N =
E =
16
20
10
13 C
6
P =
N =
E =
13
7
13
10 B +3
5
P =
N =
E =
5
5
2
31 P
15
P =
N =
E =
15
16
15
B +3 - 12
P =
N =
E =
5
7
2
9 Be +2
4
P =
N =
E =
4
5
2
15 N
7
P =
N =
E =
7
8
7
40 Ca +2
20
P =
N =
E =
20
20
18
24 Mg 2+
12
P =
N =
E =
12
12
10
_
Br - 81
P =
N =
E =
35
46
36
k =
kilo
