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