MCQ
True or False?
What Am i?
Define
100
A chemical bond is: a) a bond that forms between two atoms b) an electromagnetic force pulling the atoms together c) the electrons in the outermost energy level
A
100
An ionic bond is formed when atoms lose/gain electrons
True
100
I am the attractive force between oppositely charged ions
Ionic bond
100
Ion
a negatively charged particle that has been formed due to loss or gain of electrons
200
Valence electrons are found in: a) atoms b) outermost energy level c) all energy levels d) both a and c e) both a and b
E
200
An anion is a positive ion, while a cation is a negative ion
False; anion= negative, cation=positive
200
I am a special kind of electron because i am located on the outermost energy level of an atom
Valence electron
200
Covalent bond
A bond that forms when two nonmetals share electrons
300
Crystal lattice is a) a thick, hard shell that forms outside a crystal b) a type of compound c) none of the above (If this is chosen, explain why)
C: Crystal lattice is actually the pattern in which crystal is arranged
300
A covalent bond means that electrons can move freely throughout the sea of electrons
False; metallic
300
When my atoms bond, there is a strong electromagnetic force between the subatomic particles. Therefore, it is very hard to break my bond.
Metallic Bond
300
Ductility, malleability
Ductility: the ability to be shaped into wires malleability: the ability to be pounded into sheets
400
The three types of bonds are a) ionic (loss/gain of electrons), covalent (sharing electrons) metallic(form a sea of electrons) b) ionic (made up of ions rather than atoms) covalent(nonmetal+metal), metallic(are brittle) c) metal, non-metal, metalloid
A
400
Metallic compounds can conduct heat and electricity, can be bended and shaped, and are very brittle
False; they are very strong
400
I am an ion made of several different kinds of atoms bonded together
polyatomic ion
400
Chemical bonding
the combining of atoms to form molecules or ionic compounds
500
An ion is due to a) loss of electrons b) gain of electrons c) loss of protons d) gain of protons e) (choose up to two from the four choices above)
E; A and B
500
If Potassium has 19 protons and and fluorine has 9 protons, then potassium will gain protons because in this case it is easier than losing protons
F; there is one valence electron in K and 7 valence electrons in F; therefore, potassium will lose one and fluorine will gain one. (Bonus: Which becomes the cation and which becomes the anion)
500
I am a molecule made of ONLY two bonded atoms
diatomic molecule
500
Octet (in chemistry)
having 8 valence electrons
M
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