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UNIT 2 OF SCIENCE WORLD

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					14

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										17



18
19

20

Across:

2.	It has electrical charge of -1.
6.	____ materials cause atoms to break down spontaneously.
9.	He divided matter into 4 elements.
14.	Has the electric configuration 1s7.
16.	It is a german word for building up or construction.
17.	It has no net electric charge.
19.	Has the electric configuration 1s2,2s2,2p6.
20.	They are usually illustrated as electron clouds.

Down:

1.	Wilhem Roentgen discovered________.
3.	The probable distribution of electrons around the nucleus among the orbitals is called ___________.
4.	It has an electrical charge of positive one.
5.	He proposed that all substance are composed of 4 elements.
7.	An atom in which the total no. of electron& the total no. of protons are not equal.
8.	The highest occupied energy level or electron shell is called______.
10.	Protons+Neutron=________.
11.	He constructed the fore runner of the Modern TV picture tube in the 1870s.
12.	____ come up with atomic theory.
13.	It is located at the center of an atom.
15.	The ion with positive charge.
18.	The ion with negative charge.

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UNIT 2 OF SCIENCE WORLD

1

X

2

E

L

3

E

C

T

R

O

N

4

P

5

A

R

L

R

6

R

A

D

7

I

O

A

C

T

I

V

E

O

8

V

I

O

Y

C

T

A

S

N

T

9

E

10

M

P

E

D

O

C

L

E

S

T

11

S

R

A

N

E

O

I

O

12

J

S

13

N

N

T

14

H

Y

D

R

O

G

E

N

O

S

U

C

L

W

C

H

N

C

E

E

I

15

C

O

N

U

L

S

L

A

N

D

M

E

H

L

T

F

16

A

U

F

B

A

U

E

I

I

I

L

E

S

L

A

O

G

T

R

L

M

17

N

E

U

T

R

O

N

C

R

N

R

A

O

T

18

A

O

I

19

N

E

O

N

K

O

I

E

N

20

O

R

T

B

I

T

A

L

S

N

Across:

2.	It has electrical charge of -1.
6.	____ materials cause atoms to break down spontaneously.
9.	He divided matter into 4 elements.
14.	Has the electric configuration 1s7.
16.	It is a german word for building up or construction.
17.	It has no net electric charge.
19.	Has the electric configuration 1s2,2s2,2p6.
20.	They are usually illustrated as electron clouds.

Down:

1.	Wilhem Roentgen discovered________.
3.	The probable distribution of electrons around the nucleus among the orbitals is called ___________.
4.	It has an electrical charge of positive one.
5.	He proposed that all substance are composed of 4 elements.
7.	An atom in which the total no. of electron& the total no. of protons are not equal.
8.	The highest occupied energy level or electron shell is called______.
10.	Protons+Neutron=________.
11.	He constructed the fore runner of the Modern TV picture tube in the 1870s.
12.	____ come up with atomic theory.
13.	It is located at the center of an atom.
15.	The ion with positive charge.
18.	The ion with negative charge.

© 2014 PuzzleFast.com, Noncommercial Use Only