Name ______________________ Date _____________ Class Period _______
Atoms and Elements quiz review
Vocabulary review: atoms, elements, subatomic particles, nucleus, shells
1. subatomic particles are the 3 smaller pieces found inside an atom.
2. atoms
3.
elements
4.
nucleus
5.
are the building block of matter/smallest part of matter.
are pure substances made of only one type of atom.
is the heavy center of the atom.
shells
are the energy levels around the nucleus where electrons
are moving.
Vocabulary review: proton, electron, neutron, L shell, M shell, K shell
6.
k shell
holds 2 electrons.
7.
proton
is the positive subatomic particle found in the
nucleus.
8.
l shell
holds 8 electrons.
9.
electron
is the negative subatomic particle found outside
m shell
holds 18 electrons.
the nucleus.
10.
Vocabulary review: element symbol, atomic number, atomic mass
11. atomic mass
number that tells the number of protons PLUS neutrons.
12.
element symbol
letter(s) that chemically represent each element
13.
atomic number
number that tells the number of protons and electrons.
14. Label the atom model below. Use the following: proton, electron, neutron, nucleus, k
shell, L shell, M shell, 2, 8, 18.
M
L
+
0
K
2
proton
neutron
electron
15. Label
the periodic table box below. Use the following: atomic number, element
symbol, element name, atomic mass, protons and electrons, protons PLUS neutrons.
5
Atomic number protons and electrons
B
Element symbol
Boron
Element name
10.811
Atomic mass
protons PLUS neutrons
Use the chart information below to complete the chart.
5
B
Boron
10.811
13
Al
Aluminum
26.9815
Element
6
C
Carbon
12.011
14
Si
Silicon
28.0855
7
N
Nitrogen
14.0067
15
P
Phosphorus
30.97376
Number of
Number of
Protons
Electrons
Number of Neutrons
1. Round the atomic mass
2. Subtract atomic number from
rounded atomic mass.
Rounded atomic mass 11
16.Boron
Atomic # = 5
Atomic number
-
5
Atomic Mass=
10.811
# of neutrons
=
6
17. Aluminum
Atomic # = 13
Rounded atomic mass 27
5
13
5
13
Atomic Mass=
Atomic number # of neutrons
26.9
18. silicon
Atomic # = 14
28.0
= 14
Rounded atomic mass
14
Atomic Mass=
13
28
14
Atomic number
- 14
__________________________
# of neutrons
= 14
*List the elements on the chart in order from most protons to least protons.
Subatomic
Particle
19. Proton
20. Neutron
21. Electron
Location
Nucleus
Nucleus
Shells outside the nucleus
Charge
Positive +
Neutral 0
Negative -
Short answer:
22. How do elements of one element differ from atoms of a different element?
They differ because of the number of protons in each element is different.
23. What happens if an atom loses an electron temporarily?
It stays the same element.
24. How many different elements are there?
About 100
25. Draw a picture of an atom below that shows nucleus, protons, electrons,
and neutrons.