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Atoms #atoms #science
Flashcards
31 cards
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Practice quiz
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Questions
31
Answers
1
How many protons does Aluminum (Al) have?
13
27
26
18
2
The number of protons in the nucleus of an atom is the _______________.
Atomic number
Proton number
Mass number
Neutron number
3
What two subatomic particles make up the charge of the whole atom?
Protons only
Protons & Neutrons
Electrons only
Protons & Electrons
4
Proton, Neutron, and Electrons are called:
subatomic particles
atomic Structures
electronic particles
charged particles
5
How many valence electrons does Lithium have?
2
4
3
1
6
How many valence electrons does this atom have?
2
8
6
10
7
John Dalton's theory of the atom states that all atoms of certain elements are __________.
Copied
Divided
Different
Identical
8
Neutrons have what kind of electric charge?
positive
negative
energy
no charge/neutral
9
Neutrons add ____ to an atom.
Mass
Color
Charges
Electricity
10
What is the atomic number of Helium?
2
4
1
11
What is the mass of Potassium (K)?
20
19
39
12
The proton and neutron have approximately the same ________.
mass
particles
Electrical charges
ionic properties
13
What makes up the mass of an atom?
Protons only
Protons & Electrons
Neutrons only
Protons & Neutrons
14
What charge does a proton have?
negative
no charge
positive
neutral
15
An electron has what kind of charge?
nuetral
no charge
Negative
positive
16
What is the name of this atom?
Helium
Boron
Neon
Nitrogen
17
A proton has mass.
True
Fasle
18
The proton is located in the:
Orbital
Nucleus
Electron Cloud
Subatomic Cloud
19
What makes up the nucleus of an atom?
protons & neutrons
neutrinos
electrons
20
In an atom, the number of electrons equals the number of __________.
Neutrons
Protons
None
21
What is the electrical charge of this atom?
Neutral (no charge)
10+
10-
22
JJ Thompson found what charges particles exist in the atom?
Neutrons
Electrons
Nucleus
Protons
23
An atom is the smallest unit of a chemical element:
False
True
24
What is the mass of this atom?
0
5
20
10
25
What is the atomic number of this atom?
It doesn't have one
0
10
20
26
Ernest Rutherford discovered that atoms have a ______ made up of _________.
nucleus; protons
cloud; electrons
nucleus;electrons
nucleus; neutrons
27
How many neutrons does Na have?
23
22
12
11
28
The proton is _________ times bigger than the electron.
18
1800
18,000
180
29
Electrons are found in the:
Atomic cloud
Nucleus
Nucleatoids
Electron Cloud
30
Matter is anything that has _________ and takes up __________.
science;lessons
mass; space
charges;nothing
31
An electron does not contribute to the mass of the atom.
False
True
