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Date
Activity
Vocabulary Activity
Atomic Anagrams
After you finish reading the chapter, try this puzzle.
Use the definitions below to unscramble the vocabulary words.
1. weighted average of the mass of all naturally occurring isotopes of the same
element
MICTOA SAMS _______________________________________________________
2. the smallest unit of an element that maintains the properties of an element
MOATS ______________________________________________________________
3. positively charged particle in the atom
TORPNO ____________________________________________________________
4. made up of protons and neutrons
UCSELUN ___________________________________________________________
5. particle in the atom that has no charge
TRONUNE ___________________________________________________________
6. atoms with the same number of protons but different numbers of neutrons
SOOTPIES ___________________________________________________________
7. negatively charged particle in the atom
CLEENROT __________________________________________________________
8. number of protons in a nucleus
MICOTA BRUMEN ____________________________________________________
9. regions where electrons are likely to be found
RENECTOL SCUDLO _________________________________________________
10. SI unit used to express the mass of atomic particles
TMCOAI SASM NTUI__________________________________________________
11. sum of protons and neutrons
SAMS BRUNEM ______________________________________________________
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
51
Introduction to Atoms
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TEACHER RESOURCE PAGE
Vocabulary Activity
CONCEPT MAPPING
19. a. neutrons, b. density, c. strong force,
d. electrons, e. charges,
f. electromagnetic force
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Chapter Test C
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
A
D
D
C
A
B
C
D
B
A
C
C
D
A
B
electrons
nucleus
electron-cloud
atoms
protons
isotopes
strong
gravitational
electromagnetic
atomic mass
atoms
proton
nucleus
neutron
isotopes
electron
atomic number
electron clouds
atomic mass unit
mass number
SciLinks Activity
1. It would weigh as much as a gallon
2.
3.
4.
5.
6.
7.
8.
of milk.
The masses are almost the same.
90
about 25
quarks, three
1932
three in each neutron and proton
Particles called gluons hold quarks
together.
Standardized Test
Preparation
READING
Passage 1
1. B
2. F
Passage 2
1. A
2. H
INTERPRETING GRAPHICS
1. B
2. G
3. D
MATH
1.
2.
3.
4.
B
H
A
I
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Holt Science and Technology
65
Introduction to Atoms