Atomic Numbers Practice #1
Atomic Numbers Practice #1 Name __________________________________
Date ___________ Period __________
1) Define the following terms:
Atomic number:
Mass number:
Atomic Mass:
Isotope:
Isotope Symbol:
Nuclear Symbol:
2) Give the nuclear symbol for an atom with 9 protons and 10 neutrons: __________________
3) Give the nuclear symbol for an atom with atomic number 72 and 100 neutrons: _________________
4) Write an isotope symbol for an element with 20 protons and 21 neutrons: ___________________
5) Complete this chart for the following NEUTRAL atoms using your periodic table:
|Element |Atomic # |protons |electrons |neutrons |mass number |Isotope symbol |nuc. symbol |
|Si |14 | | |15 | | | |
|B | |5 | | |10 | | |
| | | |9 | |19 | | |
| |92 | | | |235 | | |
| | | | |48 |84 | | |
|U | | | |146 | | | |
| | | | | | | | Xe |
6) Which two of the above would be an example of isotopes?
7) Explain the difference between "atomic mass" and "mass number".
8) Complete this chart:
|Particle |charge |mass in amu |location in atom |Discovered by? |
|proton | | | | |
|neutron | | | | |
|electron | | | | |
Atomic Numbers Practice #2 Name __________________________________
Date ___________ Period __________
Definitions:
1) ___________________ Represents the number of protons in an atom’s nucleus.
2) ___________________ Atoms of the same element with different masses.
3) ___________________ Total of protons and neutrons in an atom.
4) ___________________ A weighted average of the different isotopic masses of an element’s atoms
5) ___________________ Subatomic particle with a mass of 1 AMU and a charge of +1
6) ___________________ Subatomic particle with a mass of 0 AMU and a charge of –1
7) Complete this chart for the following NEUTRAL atoms using your periodic table:
|Element |Nuc. symbol |Electrons |Protons |Neutrons |Isotope Symbol |Atomic Number |Mass Number |
|Xenon | | | | | | |133 |
|Iodine | | | |73 | | | |
| | | |50 |70 | | | |
| | | |79 | | | |200 |
| | | | | | |80 |200 |
| | |11 | |11 | | | |
| | | | | | | | |
8) Copper has 2 main isotopes, Cu-63 and Cu-65. Look up copper's atomic mass on the periodic table.
a) Which isotope, Cu-63 or Cu-65, is most abundant in nature?
b) Explain how you can tell.
9) Boron has 2 main isotopes, Boron-9 and Boron-10. Which isotope is more abundant in nature and how can you tell?
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related searches
- significant numbers practice problems
- identifying theme practice 1 pdf
- square numbers list 1 100
- binary numbers practice problems
- atomic structure practice answer key
- atomic structure practice worksheet answers
- atomic numbers of the elements
- numbers from 1 to 200
- rational numbers practice problems
- rational numbers practice test
- atomic numbers in order
- sat vocabulary lesson and practice 1 answers