WorksheetsProtons, Neutrons, and Electrons
Total questions: 84
Worksheet time: 42mins
Each electron has a charge of ___.
+1
0
-1
What is the Mass Number of the atom in the image?
What is the Atomic Number of the atom in the previous slide?
How many electrons does the atom in the previous slide have?
What is the mass number of the atom in the previous slide?
Atomic Mass
8
10
16
18
Atomic Mass
16
24
33
35
Charge
+1 ion
-1 ion
Neutral Atom
unstable
What is the CHARGE of this atom?
8
10
-2
16
If a PROTON was added to this atom, what would it change?
Charge
Mass Number
Element / Name
All of these options
What makes an ION with positive charge?
More PROTONS than ELECTRONS
More ELECTRONS than PROTONS
More NEUTRONS than PROTONS
More NEUTRONS than ELECTRONS
As you add protons to the center of the atom, what changes occur?
Element changes and mass number decreases
Element stays the same and mass number increases
Element changes and mass number increases
Element stays the same and mass number decreases
If there is an isotope with 8 protons, 9 neutrons and 10 electrons, what type of atom or ion is it?
a neutral atom
a +2 ion
a -2 ion
If there is an isotope with 10 protons, 9 neutrons and 8 electrons, what type of atom or ion is it?
a neutral atom
a +2 ion
a -2 ion
¿Cuál es el número atómico del átomo de hierro?
56
26
86
¿Cuál es el número másico del Fósforo?
31
30
15
46
¿Cuál es el número de electrones del un átomo de Na?
23
11
34
¿Cuál es el número de neutrones del arsénico?
75
33
42
Which of the following images correctly describes lithium with the following information
3 Protons
4 Neutron
3 electrons
When you have a negative ion of an atom, O-2 for example, do you have a higher number of protons or electrons?
Number of protons
Number of electrons
As you add protons to the center of the atom, what changes occur? Check all that applies
Element changes and mass number decreases
Element stays the same and mass number increases
Element changes and mass number increases
Element stays the same and mass number decreases
Add 6 protons to the center of the atom. Then add one neutron. Continue to add neutrons, what do you observe?
The mass number stays the same.
The mass number increases.
Thea mass number does not change
4
Add two protons and two neutrons to the center of the atom. Add 1 electron. Continue to add more electrons, what changes occur?
The net charge decrease
Nothing happens
The net charge increases
The mass increases
Add two protons and two neutrons to the center of the atom. Add 1 electron. Continue to add more electrons, what changes occur?
The net charge decrease
Nothing happens
The net charge increases
The mass increases
Using the information from the previous question, how many electrons are needed to make the atom neutral?
0
1
2
3
