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20 questions
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- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
If an atom gains an electron, what charge will it have?
positive
negative
neutral
- Multiple ChoicePlease save your changes before editing any questions.
Where is most of the mass of an atom found?
nucleus
electron cloud
atomic number
mass number
- Multiple ChoicePlease save your changes before editing any questions.
What are valence electrons?
electrons that are in the electron cloud
all the electrons in an atom
electrons in outer shell of an atom
- Multiple ChoicePlease save your changes before editing any questions.
How many total electrons can the 2nd shell or energy level hold?
1
2
8
18
- Multiple ChoicePlease save your changes before editing any questions.
What happens to the valence electrons of an atom when it is a covalent bond?
transfers electrons
shares electrons
does nothing
- Multiple ChoicePlease save your changes before editing any questions.
What happens to the valence electrons of an atom that uses an ionic bond?
transfers electrons
shares electrons
nothing
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is an ion?
Na
C
O
Na+1
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On the periodic table, carbon is in group 14, period 2. How many valence electrons does carbon have?
6
14
2
4
- Multiple ChoicePlease save your changes before editing any questions.
Which ion will nitrogen become when it goes through an ionic bond? It is in group 15.
+5
+3
-5
-3
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What type of ion will Calcium become when it goes through an ionic bond? Calcium is in group 2.
+2
-2
+12
-12
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A pure substance that contains 2 or more elements that are chemically bonded.
an atom
an ionic bond
organic
a compound
- Multiple ChoicePlease save your changes before editing any questions.
This type of bond is when atoms share electrons.
ionic
metallic
covalent
polar
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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
- Multiple ChoicePlease save your changes before editing any questions.
Groups 1, 2 and 13 on the periodic table contain elements with atoms that lose valence electrons and become _____ charged.
equally
negatively
positively
neutrally
- Multiple ChoicePlease save your changes before editing any questions.
Dot diagrams represent ____.
outer shell electrons
protons
neutrons
all electrons
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What group will rarely form compounds because they are stable atoms?
18
1
2
17
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
Which element only needs 2 valence electrons to be stable?
Oxygen
Nitrogen
Hydrogen
Neon
- Multiple ChoicePlease save your changes before editing any questions.
What type of chemical bonds are between metals and nonmetals?
ionic bonds
covalent bonds
metallic bonds