WorksheetsAtomic Structure/Ions Test
Total questions: 50
Worksheet time: 36mins
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
2
34
36
40
Isotopes are atoms with a different number of
protons
electrons
neutrons
atoms
This particle determines the identity of an atom
proton
neutron
ion
isotope
Which of the Chlorine [Cl] is heavier?
Cl-37
Cl-35
For Cl 37, what does the 37 represent?
Number of Protons
Number of Neutrons
Number of Electrons
Atomic Mass Number
Protons are...
Positive charge
Negative charge
Neutral/No charge
Electrons are...
Positive charge
Negative charge
Neutral/No charge
Neutrons are...
Positive charge
Negative charge
Neutral/No charge
Which particles are NOT inside the nucleus of atoms?
Protons
Electrons
Neutrons
True/False: There are equal numbers of protons and electrons in a neutral atom.
true
false
If an atom of Boron has 5 protons how many electrons will it need to have to be neutral?
3
4
5
6
If a neutral atom of Boron has 5 protons and 5 electrons how many electrons would a +3 cation of Boron have?
2
3
7
8
What charge does a cation have?
negative
positive
If a neutral atom of Boron has 5 protons and 5 electrons, how many electrons would a -3 anion have?
2
3
5
8
What charge does an anion have?
negative
positive
What is the charge of this atom?
neutral
positive
negative
What is the charge of this atom?
neutral
positive
negative
What is the charge of this atom?
0
4+
1-
5-
What is the charge of this atom?
neutral
positive
negative
What is the name of this atom?
Hydrogen (H)
Magnesium (Mg)
Beryllium (Be)
The number of protons + neutrons in an atomic nucleus is referred to as what?
Atomic number
Isotope number
Mass number
How does an atom become an ion?
gaining or losing electrons
gaining or losing protons
gaining or losing neutrons
To figure out the mass of an atom based on its subatomic particles you would add ______ & ________.
Protons & Electrons
Protons & Neutrons
Neutron & Electrons
A lithium nucleus contains 3 protons and 4 neutrons.
What is its nuclide notation?
A nucleus X has 17 protons and 18 neutrons.
Which notation is correct for this nucleus?
Which diagram could represent the structure of a neutral atom?
How do you calculate the charge of an atom?
protons + electrons
protons - electrons
protons + neutrons
mass number - protons
How many electrons does this ion have?
32
18
16
14
48
8 protons, 8 neutrons, 10 electrons
Anion
10 protons, 12 neutrons, 7 electrons
Cation
12 protons, 10 neutrons, 12 electrons
neutral
Where is the nucleus?
Which number means "charge" of the atom?
What do we call the tiny core at the center of an atom, which contains all of the atom's mass and all of its positively charged subatomic particles.
Electron
Neutron
Proton
Nucleus
Atoms with the same atomic number but different atomic mass are called?
prototypes
subtypes
isotopes
ions
Compared to protons, electrons have:
a much smaller mass and an opposite charge
about the same mass and opposite charge
a much larger mass and the same charge
much larger mass and an opposite charge
A subatomic particle with zero charge found in the nucleus of an atom is called a(n)
electron
proton
neutron
positron
The "charge" on a complete atom that has the same number of protons and electrons is equal to:
the number of protons
the number of electrons
zero
e
Which of the following is a charged subatomic particle that accounts for nearly half the mass of an atom is the:
Electron
Neutron
Proton
Positron
A common isotope of (Fe) has an atomic number of 26 and a mass number of 56. What is the total number of subatomic particles in the nucleus.
26
30
56
82
What is the atomic weight of oxygen?
8
O
Oxygen
15.999
What is the element name of the element?
8
O
Oxygen
15.999
What is the element symbol of the element?
8
O
Oxygen
15.999
