stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Atomic Theory and Structures Flashcards | StudBud
Explore
/
Atomic Theory and Structures
Atomic Theory and Structures
10 terms
·
StudBud Administration
·
44 plays
Learn the atomic theories and structures!
Flashcards
10 cards
F
Practice quiz
P
Host live
L
Questions
10
Answers
1
What is the smallest particle that exists in an atom?
Electron cloud
Electron
Proton
Neutron
2
What experiment did Rutherford do to prove the existence of a positive, dense center in atoms?
Plum Pudding Experiment
Tin Foil Experiment
Neutron Dispersion Experiment
Gold Foil Experiment
3
If Cobalt has an atomic number of 27, how many protons does it have?
30
26
27
29
4
Which answer choice has the correctly matched charges for each particle?
Proton(-), Neutron(+), Electron(neutral)
Proton(-), Neutron(+), Electron(-)
Proton(neutral), Neutron(-), Electron(+)
Proton(+), Neutron(neutral), Electron(-)
5
Why are atomic masses considered fractional in nature?
Because isotopes exist only in fractional amounts.
Because some elements have a fractional number of isotopes.
Because chemistry is fun.
Because most of the elements exist as a mixture of isotopes.
6
Dalton's atomic theory states all atoms of a given element are identical in mass and properties
True
False
7
An element has an atomic mass of 63.546. How many neutrons does it contain?
36
35
34
37
8
A proton is approximately how many times heavier than an electron?
3000
4500
2000
1500
9
Find average atomic mass of Lithium if 7.42% is
6
Li (6.015 amu) and 92.58% is
7
Li (7.016 amu).
6.941 amu
6.914 amu
5.445 amu
7.213 amu
10
Which answer choice correctly describes the structure of an atom?
Protons and neutrons in the nucleus. Electrons in orbit.
Protons and neutrons floating around the electron cloud.
Neutrons, protons, and electrons inside the nucleus.
Electrons and protons inside the nucleus.
