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Review for Atomic Theory, Atoms, and Periodic Table test
Flashcards
21 cards
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Practice quiz
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Questions
21
Answers
1
Which is false about atoms?
small
only make up solid objects
always moving
are neutral
2
What does the word atom mean?
indivisible
tiny
particles
energy
3
If an atom has an atomic number of 20, how many electrons does that atom have?
2
20
0
40
4
Who came up with the theory of the nucleus?
Dalton
Thomson
Bohr
Rutherford
5
Where are electrons found?
orbiting the nucleus in energy levels
nucleus
outside the electron cloud
protons
6
What is the overall charge of an atom?
positive
positive and negative
no charge
negative
7
Which model has an electron cloud?
Dalton's Model
Bohr's Model
Rutherford's Model
Modern Model
8
Where are protons located?
energy level
nucleus
elements
electron cloud
9
As you move from left to right across the periodic table, reactivity ...
there is no trend
increases
stays the same
decreases
10
If an atom has 7 protons and 10 neutrons, what is the mass number of this atom?
10
3
17
7
11
As you move down a group/family, the reactivity of elements
increases
stays the same
there is no trend
decreases
12
Atomic number tell us the number of ...
protons
electron clouds
energy levels/orbitals
neutrons
13
Atoms from the same element are...
identical
really neat
similar
different
14
What can I not determine from the periodic table?
atomic number
chemical symbol
number of neutrons
atomic mass
15
How do I find the atomic mass of an atom?
By subtracting the number of protons and electrons
By adding neutrons and electrons
By adding protons and neutrons
By adding protons and electrons
16
Who discovered the idea of the atom?
Einstein
Bohr
Democritus
Dalton
17
Atoms are the smallest unit of matter and can not be…
neutral
positive
divided
destroyed
18
Which two subatomic particles always have to be equal?
neutrons and protons
protons and energy levels
neutrons and electrons
protons and electrons
19
Families or groups in the periodic table are grouped together based on their ...
color
cousins
last name
properties
20
Who discovered that there are negatively charged particles called electrons?
Bohr
Dalton
Thomson
Rutherford
21
What is the atomic number of an atom that has 5 electrons?
10
5
20
6
