8th-grade Atomic Structure And The Periodic Table
(169).jpg "8th-grade Atomic Structure And The Periodic Table")
You’re never too young or too old to start learning about science, and today we’ll be doing so at an eighth-grade level. How much do you know about atomic structure and the periodic table of elements? Take the following quiz and find out for sure!
- 1.The central part of an atom is called the
- A.
Electron
- B.
Neutron
- C.
Proton
- D.
Nucleus
- 2.The electric charge on a proton is
- A.
Positive
- B.
Neutral
- C.
Negative
- D.
Changing
- 3.The number of protons in the nucleus is the
- A.
Atomic mass
- B.
Isotope
- C.
Atomic number
- D.
Half-life
- 4.Nitrogen has the atomic number 7. An isotope of nitrogen containing seven neutrons would be
- A.
Nitrogen-13
- B.
Nitrogen-14
- C.
Nitrogen-15
- D.
Nitrogen-16
- 5.How do the size of a negative ion compare to the size of the atom that formed it?
- A.
It's smaller
- B.
It's larger
- C.
It's the same size
- D.
It varies
- 6.The modern periodic table is organized by
- A.
Size of atom
- B.
Atomic mass
- C.
Number of neutrons
- D.
Atomic number
- 7.Elements in a group have
- A.
A wide range of chemical properties
- B.
The same atomic radius
- C.
Similar chemical properties
- D.
The same number of protons
- 8.Elements in a period have
- A.
A wide range of chemical properties
- B.
The same atomic radius
- C.
Similar chemical properties
- D.
The same number of protons
- 9.From left to right in a period, the size of the atom
- A.
Increases
- B.
Decreases
- C.
Remains the same
- D.
Shows no pattern
- 10.
![The elements in Group 1 of the periodic table are commonly called the - ProProfs]( "The elements in Group 1 of the periodic table are commonly called the")
The elements in Group 1 of the periodic table are commonly called the- A.
Alkali metals
- B.
Transition metals
- C.
Alkaline earth metals
- D.
Rare earth metals
- 11.The isotope nitrogen-13 has a half-life of 10 minutes. If you start with 40 grams of this isotope, how many grams will you have left after twenty minutes?
- A.
10
- B.
15
- C.
20
- D.
30
- 12.
![What does the number above the symbol for each element represent? - ProProfs]( "What does the number above the symbol for each element represent?")
What does the number above the symbol for each element represent?- A.
The number of isotopes
- B.
Its atomic number
- C.
Its number of neutrons
- D.
Its atomic mass
- 13.
![The atom of what element is in Period 4, Group 13? - ProProfs]( "The atom of what element is in Period 4, Group 13?")
The atom of what element is in Period 4, Group 13?- A.
Na
- B.
Ga
- C.
Al
- D.
K
- 14.
![What do the elements on the far right of the table (He, Ne, Ar, and Kr) have in common? - ProProfs]( "What do the elements on the far right of the table (He, Ne, Ar, and Kr) have in common?")
What do the elements on the far right of the table (He, Ne, Ar, and Kr) have in common?- A.
They do not generally react with other elements
- B.
They are liquid in normal conditions
- C.
They are metals that rust easily
- D.
They are very reactive gases
- 15.
![How many electrons does a neutral chlorine (Cl) atom contain - ProProfs]( "How many electrons does a neutral chlorine (Cl) atom contain")
How many electrons does a neutral chlorine (Cl) atom contain- A.
16
- B.
17
- C.
18
- D.
19
Questions: 23 | Attempts: 1853 | Last updated: May 16, 2016
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