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Flashcards in Tests Questions Deck (52):
1

n =

nano

2

dk =

deka

3

M =

mega

4

m =

milli

5

G =

billions

6

p =

pico

7

d =

deci

8

which one is the largest ..

k u T M

T - trillions

9

which one is the largest ?

p dk c m

dk

10

154.1dm ______km

.01541

11

0.44g = _____mg

.000 000 44

12

0.7Gm= ______hm

7 000 000

13

T or F:
an alpha particle is the same as a hydrogen nucleus -

False

14

T or F -

41 Ge -4 has 3 electrons.
32

true

15

T or F

it is rare for an element to have isotopes -

false

16

82 or more protons =

radioactive

17

T or F:

195 Pt & 196 Pt have same # of protons -
78 78

true

18

it's found in the nucleus w/ positive charge -

proton

19

in the nucleus, no charge -

nucleus

20

orbits outside of nucleus, negative charge -

electron

21

changes in # of particle creates an ion -

proton & electrons

22

it identifies the element -

protons

23

changes in this causes an isotope -

neutrons

24

174 Yb ----> 4 He + _______ _____
70 2 _______

170 Er
68

25

he said electrons are found in a specific energy levels -

Bohr

26

Philosophers think I am wrong -

Democritus

27

all matter is made of atoms =

Dalton

28

light energy -

Max Plank

29

don't know electrons exact location but the probability of it -

schrodinger and bohr

30

model is the same as daltons -

democritus

31

electrons move randomly around nucleus -

rutherford

32

he said that there is same amount of matter present after chemically reaction has happened as there was before -

Dalton

33

we can know electrons location & momentum -

heisengerg

34

wrote "something prinicples" -

heisenberg

35

he said electrons dont move around randomly -

Bohr

36

he said it's a dense center ; mostly empty space -

rutherford

37

explain what will happen when an electron is hit w/ a photon that has 5 units of energy -

nothing will happen to the electron

38

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

39

T or F;

nobel gas = interia gas.

False

40

atomic radius from smallest to largest -

In , B , Ti

B , In , Ti

41

how to find valence electrons (2) -

group # - look at ones place

ask sister for d and f block

42

36 S
16

P =
N =
E =

16
20
10

43

13 C
6

P =
N =
E =

13
7
13

44

10 B +3
5

P =
N =
E =

5
5
2

45

31 P
15

P =
N =
E =

15
16
15

46

B +3 - 12

P =
N =
E =

5
7
2

47

9 Be +2
4

P =
N =
E =

4
5
2

48

15 N
7

P =
N =
E =

7
8
7

49

40 Ca +2
20

P =
N =
E =

20
20
18

50

24 Mg 2+
12

P =
N =
E =

12
12
10

51

_
Br - 81

P =
N =
E =

35
46
36

52

k =

kilo