My Crossword Maker Logo
Powered by BrightSprout
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Unit 2 Crossword

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Across
2
Discovered energy quanta
5
Negatively charged particle
8
Positively charged particles
9
A helium Nucleus produced by radioactive substances
12
Father of nuclear physics
14
A beam of electrons
15
Time taken for isotope to divide in half
17
Introduced atomic theory
18
Neutral particle
19
Variants of a chemical element
20
Electromagnetic waves
Down
1
Electromagnetic radiation from radio active decay of atomic nuclei
3
Amount of matter in atom
4
Created the Bohr model
6
Discovered the electron
7
Consisting of Alpha particles
10
Smallest unit of matter
11
Formulation of atomic theory of the universe
13
Total number of neutrons and protons
16
Its the center of the atom