Compounds Question Preview (ID: 40424)
Middle School Compound Review.
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Which of the following is the correct way to write a formula for Na1+, Cl 1-
a) Na1Cl1
b) NaCl
c) ClNa
d) NC
What is the oxidation number of potassium (K)?
a) 1+
b) 1-
c) 2+
d) 2-
What is the oxidation number of Oxygen (O)?
a) 2-
b) 16+
c) 6+
d) 8
How many valance electrons does Neon (Ne) have?
a) 18
b) 10
c) 2
d) 8
Why do atoms need 8 valance electrons?
a) To be cool
b) To be chemically unstable
c) To be chemically stable
d) To be noble
What two types of elements are needed for ionic compounds?
a) metal and metalloid
b) metal and metal
c) metal and non-metal
d) non-metal and non-metal
During an ionic compound the metal element -
a) gains electrons
b) share electron
c) loses proton
d) loses electrons
When the number of neutrons is different that what is predicted on the periodic table it is called -
a) ion
b) ionic
c) isotope
d) covalent
Carbon -14 (C-14) is an example of -
a) ion
b) isotope
c) regular atom
d) Buddy biscuits
Which element is likely to form an ionic bond with Oxygen (O)?
a) Iron (Fe)
b) Carbon (C)
c) Iodine (I)
d) Hydrogen (H)
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