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WorksheetsChemical Bonds
Total questions: 20
Worksheet time: 2hrs 40mins
What is the difference between elements and compounds?
they are the same
elements make up compounds
compounds make up elements
compounds are made of the same type of atoms while elements are mad up of two or more types of atoms
If an atom gains an electron, what charge will it have?
positive
negative
neutral
Where is most of the mass of an atom found?
nucleus
electron cloud
atomic number
mass number
What are valence electrons?
electrons that are in the electron cloud
all the electrons in an atom
electrons in outer shell of an atom
How many total electrons can the 2nd shell or energy level hold?
1
2
8
18
What happens to the valence electrons of an atom when it is a covalent bond?
transfers electrons
shares electrons
does nothing
What happens to the valence electrons of an atom that uses an ionic bond?
transfers electrons
shares electrons
nothing
Which of the following is an ion?
Na
C
O
Na+1
On the periodic table, carbon is in group 14, period 2. How many valence electrons does carbon have?
6
14
2
4
Which ion will nitrogen become when it goes through an ionic bond? It is in group 15.
+5
+3
-5
-3
What type of ion will Calcium become when it goes through an ionic bond? Calcium is in group 2.
+2
-2
+12
-12
A pure substance that contains 2 or more elements that are chemically bonded.
an atom
an ionic bond
organic
a compound
This type of bond is when atoms share electrons.
ionic
metallic
covalent
polar
What happens to electrons in an ionic bond?
they are shared equally between atoms
both atoms in the bond lose electrons
both atoms in the bond gain electrons
one atom gains electrons and the other atom loses electrons
Groups 1, 2 and 13 on the periodic table contain elements with atoms that lose valence electrons and become _____ charged.
equally
negatively
positively
neutrally
Dot diagrams represent ____.
outer shell electrons
protons
neutrons
all electrons
What group will rarely form compounds because they are stable atoms?
18
1
2
17
What is the octet rule?
it states atoms need to be happy
it states atoms need 8 valence electrons to be stable
it states atoms need 6 valence electrons to be stable
it states atoms need to share electrons to be stable
Which element only needs 2 valence electrons to be stable?
Oxygen
Nitrogen
Hydrogen
Neon
What type of chemical bonds are between metals and nonmetals?
ionic bonds
covalent bonds
metallic bonds
