WorksheetsChemistry essentials: Bohr's model and subatomic particles
Total questions: 21
Worksheet time: 18mins
Protons have a (a) charge.
Neutrons have a (a) charge.
Electrons have a (a) charge.
Protons are (a) atomic mass unit. (amu)
Electrons are found in the....
Nucleus
Electron cloud
What the atomic weight of this element?
7
14
1
0
What's the atomic number of this element?
20
40
1
2
A scientist comes across an atom of iodine with 95 neutrons. Based on the information in the atomic symbol shown below, is this iodine atom an isotope?
Yes
No
A scientist comes across a potassium atom with 20 neutrons. Is this potassium atom an isotope? Use the information in the atomic symbol below to figure it out.
Yes
No
A scientist comes across a potassium atom with 23 electrons. Is this atom an example of an ion?
Yes
No
A scientist finds a helium atom with 3 neutrons. Is this atom an ion or an isotope? How many extra or missing neutrons does it have?
Ion, 1 extra neutron
Ion, 1 missing neutron
Isotope, 1 extra neutron
Isotope, 1 missing neutron
A scientist find a carbon atom with 4 neutrons. Is this an ion or an isotope? How many missing or extra neutrons does this atom have?
Ion, 2 extra neutrons
Ion, 2 missing neutrons
Isotope, 2 extra neutrons
Isotope, 2 missing neutrons
A scientist find a fluorine atom with 10 neutrons. Is this atom an isotope or an ion? How many missing or extra neutrons does it have?
Ion, 1 missing
Ion, 1 extra
Isotope, 1 missing
Isotope, 1 extra
A scientist comes across a cesium atom with 57 electrons. Is this an isotope or an ion? How many missing or extra electrons does it have?
Ion, 2 missing electrons
Ion, 2 extra electrons
Isotope, 2 missing electrons
Isotope, 2 extra electrons
A scientist comes across a xenon atom with 52 electrons. Is this an isotope or an ion? How many missing or extra electrons does it have?
Ion, 2 extra electrons
Ion, 2 missing electrons
Isotope, 2 extra electrons
Isotope, 2 missing electrons
A scientist comes across an argon atom with 19 electrons. Is this an ion or an isotope? Does this atom have a positive or negative charge?
Ion, Positive
Ion, Negative
Isotope, Positive
Isotope, Negative
A scientist comes across a phosphorous atom with 14 electrons. Is this an ion or an isotope? Does it have a positive or negative charge?
Ion, Positive
Ion, Negative
Isotope, Positive
Isotope, Negative
How many protons does bromine normally have?
(a)
How many neutrons does bromine normally have?
(a)
How many electrons does bromine normally have?
(a)
Which of the following images are examples of molecules?
