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Atom
Test Description: Atom
Instructions: Answer all questions to get your test result.
1) The dense, positivly charged center is called the __________.
A
electron
B
proton
C
neutron
D
nucleus
2) This particle is responsible for the positive charge of the nucleus.
A
proton
B
electron
C
neutron
D
quark
3) The outer shells have a negative charge due to these particles.
A
quarks
B
neutrons
C
electrons
D
protons
4) If an atom has an atomic number of 6, it is the element _________.
A
carbon
B
boron
C
beryllium
D
sodium
5) What is the atomic number for oxygen?
A
16
B
8
C
6
D
2
6) To which period does magnesium belong?
A
1
B
2
C
3
D
21
7) To which group does sodium belong?
A
23
B
1
C
11
D
2
8) How many electrons does nitrogen have?
A
2
B
7
C
14
D
5
9) Which is the most reactive group of metals on the periodic table?
A
halogens
B
alkali
C
noble gases
D
alkaline earth
10) Which is the most reactive group of nonmetals on the periodic table?
A
noble gases
B
halogens
C
alkaline earth
D
akali
*select an answer for all questions
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