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Atoms and Atomic Structure Flashcards | StudBud
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Atoms and Atomic Structure
Atoms and Atomic Structure
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Atomic structure and elements on periodic table
Flashcards
16 cards
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Questions
16
Answers
1
Matter is made up of particles too small to be seen by the human eye. What are these particles?
molecule
compounds
mixtures
atoms
2
The atomic number of an element tells you the atom's
number of neutrons
number of protons
mass
weight
3
What are neutrons?
charged particles that form a cloud around an atom's nucleus
uncharged particles that form a cloud around the nucleus
uncharged particles in an atom's nucleus
negatively charged particles in an atom's nucleus
4
Electrons
have more mass than the other parts of an atom
have a positive charge
determine the atomic number of an element
move around outside the nucleus
5
An atom with 88 protons in its nucleus is
Strontium - Sr
Radon - Rn
Radium - Ra
6
A magnesium atom has 12 protons, 11 electrons, and 12 neutrons. What is the charge?
-11
+1
-1
+ 12
7
Electrons found in the outermost shell are
valence electrons
neutrinos
valence protons
neutrons
8
A sodium (Na) atom contains 11 protons and 12 neutrons. How many electrons does a Na atom have?
11
12
9
10
9
An atom has the electron configuration 2-8-3. What element is this?
Neon - Ne
Cadmium - Cd
Lithium - Li
Aluminum - Al
10
An atom becomes charged (an ion) when it gains or loses
atomic mass number
one of more electrons
one or more neutrons
atomic number
11
The total number of protons and neutrons in the nucleus determines the atom's
symbol
atomic number
size
atomic weight
12
Most elements on the periodic table are
metals
nonmetals
metalloids
noble gases
13
A chlorine atom has 17 protons, 17 electrons and 18 neutrons. It has an atomic weight of
17
35
34
18
14
The nucleus of an atom contains
protons and neutrons
only electrons
protons, neutrons, and electrons
electrons and protons
15
The positively charged particles in an atom are
nuclei
protons
electrons
neutrons
16
Two atoms have the same number of protons. They must be
atoms of the same element
the same number of electrons
isotopes of each other
neutrally charged
