Term
Yes or No
A covalent bond can exist between only two atoms. |
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Definition
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Term
Yes or No
Electrons of one atom are different in nature from electrons of another. |
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Definition
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Term
Yes or No
Diatomic oxygen contains two bonding pairs of electrons. |
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Definition
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Term
Yes or No
A double bond is almost as strong as a signle bond. |
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Definition
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Term
Yes or No
Unpaired electrons are bonding sites for covalent bonds. |
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Definition
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Term
Yes or No
Organic compounds are covalent compounds. |
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Definition
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Term
| Diatomic elements can have polar covalent bonds. |
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Definition
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Term
Yes or No
Electron sharing in covalent compounds is not necessarily equal sharing. |
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Definition
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Term
Yes or No
Polar diatomic molecules are partially charged on each end. |
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Definition
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Term
Yes or No
Most molecules are linear. |
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Definition
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Term
Yes or No
Covalent compounds cannot exist as solids. |
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Definition
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Term
Yes or No
The bond between Na and Cl in NaCl is is an example of a purely ionic bond. |
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Definition
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Term
Yes or No
Most metals have only one or two valence electrons. |
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Definition
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Term
Yes or No
Metallic bonds do not satisfy the octet rule. |
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Definition
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Term
Yes or No
Some alloys are not metallic compounds. |
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Definition
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Term
| Name three properties of metals. |
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Definition
malleability
ductility
luster
thermal and electrical conductivity |
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Term
| The most efficient arrangement of metal ions in a crystal lattice is called __________. |
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Definition
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Term
| How does the covalent compound ibuprofen relieve pain? |
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Definition
| It inhibits the production of prostaglandins by the body. |
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Term
| Large organic molecules (such as proteins) with unique properties are called __________. |
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Definition
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Term
| What is the shape of a five-atom molecule if one atom is central? |
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Definition
| The atoms form a regular tetrahedron |
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Term
| What kind of elements form polar covalent bonds? |
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Definition
| Nonmetals with different electronegativities form polar covalent bonds. |
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Term
| A molecule that contains carbon and at least one hydrogen atom is called a(n) _____________. |
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Definition
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Term
| Given any three atoms, what are the minimum and maximum numbers of single bonds they can form to make a molecule? |
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Definition
| They can form a minimum of two bonds and a maximum of four. |
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Term
| Explain the difference between a diatomic element and a diatomic molecule. |
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Definition
| Diatomic molecules consist of two atoms; diatomic elements consist of two of the same atom. |
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Term
| When will an atom form multiple covalent bonds? |
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Definition
| An atom forms multiple covalent bonds when it needs more electrons to acquire a stable valence electron configuration. |
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Term
| Name the three types of chemical bonds. |
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Definition
| The three types of chemical bonds are covalent, ionic, and metallic. |
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Term
| Which family of elements has the highest electronegativity? |
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Definition
| The halogens have the highest electronegativities. |
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Term
| How is electron affinity measured? |
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Definition
| Chemists add electrons to the atoms and measure the energy change. |
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Term
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Definition
| Atoms are generally most stable when they have a full eight electrons in their valence energy level. |
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Term
| What type of compound is hydrogen chloride (HCI), a poisonous molecular gas? |
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Definition
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Term
| What type of compound is ytterbium (Yb), a silvery lustrous solid that is ductile and malleable and has a high melting point? |
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Definition
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Term
| What type of compound is magnesium oxide (MgO), a powdery white solid that has a high melting point (2826oC) and is an electrical insulator? |
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Definition
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Term
| What type of compound is potassium chloride (KCl), a crystalline solid, soluble in water, that has a high melting point? |
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Definition
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Term
| What type of compound is aluminum (Al), a silver white, insoluble substance that is lustrous, ductile, and a good electrical conductor? |
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Definition
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Term
| What type of compound is bromine (Br2), a reddish brown, molecular liquid that is an electrical insulator? |
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Definition
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Term
| What type of compound is calcium iodide (Cal2), a yellowish white, soluble solid with a high melting point? |
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Definition
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Term
Which is not a property of metallic compounds?
-conduct heat
-are lustrous
-are malleable
-form electrolytes |
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Definition
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Term
| Electrons in metallic compounds are... |
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Definition
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Term
Which is not a property of ionic compounds?
-form electrolytes
-have high boiling points
-have high melting points
-naturally occur as gases |
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Definition
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Term
| The vast three-dimensional particle structure of an ionic compound is called a... |
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Definition
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Term
| When magnesium (Group 2A) and oxygen (Group 6A) combine, how many total electrons are transferred? |
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Definition
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Term
| Generally, two atoms form an ionic bond if they... |
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Definition
| are from different sides of the periodic table |
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Term
Which of the following is not a linear molecule?
-NH3
-CO2
-HF
-Cl2 |
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Definition
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Term
| What holds covalent molecules together in a crystalline solid, such as sugar? |
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Definition
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Term
Which of the following is a polar molecule?
-H2
-CO2
-Ar
-Hl |
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Definition
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Term
Which of the following is a polyatomic molecule?
-H2
-CO2
-Ar
-Hl |
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Definition
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Term
| Every normal diatomic nitrogen molecule has a triple covalent bond. How many electrons does each nitrogen atom contribute to the bond? |
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Definition
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Term
| Which bond type is CaCl2? |
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Definition
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Term
| Two atoms with nearly full valence shells and similar electronegativities can bond by... |
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Definition
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Term
How can a neutral, unbonded atom complete its valence octet?
-get a free electron from its environment
-share electrons with another atom
-steal an electron from another atom
-all of the above |
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Definition
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Term
| A bonded atom's ability to attract and hold electrons is its... |
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Definition
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Term
| An unbonded atom's ability to attract and hold electrons is its... |
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Definition
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Term
| Normally atoms are most stable when they... |
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Definition
| attain a full valence shell of electrons |
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Term
| Which atom or ion fulfills the octet rule? |
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Definition
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Term
| Chemical bonds involve mainly an atom's... |
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Definition
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Term
Which is the major factor in determining a molecule's properties?
-total number of electrons
-bond character
-total number of atoms in the molecule
-component atoms' characteristics |
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Definition
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