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Compounds
Test Description: Middle school compound review
Instructions: Answer all questions to get your test result.
1) Which of the following is the correct way to write a formula for Na1+, Cl 1-
A
ClNa
B
NaCl
C
NC
D
Na1Cl1
2) What is the oxidation number of potassium (K)?
A
1+
B
2+
C
1-
D
2-
3) What is the oxidation number of Oxygen (O)?
A
6+
B
8
C
16+
D
2-
4) How many valance electrons does Neon (Ne) have?
A
10
B
18
C
2
D
8
5) Why do atoms need 8 valance electrons?
A
To be chemically stable
B
To be noble
C
To be cool
D
To be chemically unstable
6) What two types of elements are needed for ionic compounds?
A
metal and non-metal
B
metal and metal
C
metal and metalloid
D
non-metal and non-metal
7) During an ionic compound the metal element -
A
gains electrons
B
loses electrons
C
loses proton
D
share electron
8) When the number of neutrons is different that what is predicted on the periodic table it is called -
A
isotope
B
ion
C
covalent
D
ionic
9) Carbon -14 (C-14) is an example of -
A
isotope
B
ion
C
Buddy biscuits
D
regular atom
10) Which element is likely to form an ionic bond with Oxygen (O)?
A
Iodine (I)
B
Iron (Fe)
C
Carbon (C)
D
Hydrogen (H)
*select an answer for all questions
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