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BJU Physical Science > Chapter 5: Bonding and Compounds > Flashcards

Chapter 5: Bonding and Compounds Flashcards

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1
Q

Can two different elements bond together to gain stability?

A

Yes

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2
Q

Can atoms of one kind of element bond together to gain stability?

A

Yes, but not all.

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3
Q

Are most atoms unstable when they are not bonded to other atoms?

A

Yes

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4
Q

Are most elements found in their pure form in nature and rarely form compounds outside of scientific laboratories?

A

No

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5
Q

Do molecules form only when different elements bond together?

A

No

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6
Q

Is most of the oxygen in the Earth’s atmosphere in the form O2- two oxygen atoms bonded together?

A

Yes

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7
Q

Do most atoms share, gain, or lose electrons in order to attain 6 electrons in their highest energy level?

A

No

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8
Q

When does the octet rule state that atoms are generally most stable?

A

Atoms are most stable when their rings are filled in with 8 valence electrons.

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9
Q

What does the octet rule generally determine?

A

-Atoms are most stable when they have a full 8 valence electrons
-In order to get 8 valence electrons, atoms must share or transfer electrons

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10
Q

The octet rule can be satisfied when an atoms does what?

A

-Shares an electron
-Gains enough electrons to have a full octet in it’s valence energy level
-Loses enough electrons to expose full octet of the next lower level

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11
Q

The properties of water are different form the properties of hydrogen and oxygen because why?

A

The hydrogen atoms and oxygen atoms share electrons, so chemical bonding changes the properties.

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12
Q

Does chemical bonding preserve the physical and chemical properties of the elements involved?

A

No

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13
Q

What is a chemical bonded between two nonmetals with similar elctronegativity would likely be what?

A

Covalent

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14
Q

Covalent bonding forms _____________, while ionic bonding forms _________.

A

molecules; crystals

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15
Q

Between two oppositely charged ions

A

Ionic

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16
Q

Between atoms with very different electronegativites

A

Ionic

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17
Q

Between elements such as transition metals with similar low elctronegativites

A

Metallic

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18
Q

Most often formed between nonmetals

A

Covalent

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19
Q

Resulting in a sea of shared electrons

A

Covalent

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20
Q

Resulting from two atoms sharing electrons

A

Metallic

21
Q

Resulting in a molecule

A

Covalent

22
Q

What is the smallest ratio of ions within an ionic compound called?

A

Formula unit

23
Q

Can molecules be formed by covalent or ionic bonds?

A

No

24
Q

Does :N=N: represent a diatomic molecule with a triple covalent bond?

A

Yes

25
Q

Why does diatomic nitrogen form triple bonds?

A

Each nitrogen atom needs three electrons to completer it’s octet.

26
Q

Can only one covalent bond exist between two atoms?

A

No

27
Q

Is a double covalent weaker than a single bond?

A

No

28
Q

Do polar bonds form because some atoms have different electronegativites?

A

Yes

29
Q

Are electrons shared in covalent bonds not necessarily equally shared?

A

Yes

30
Q

Are polar molecules partially charged on each end?

A

Yes

31
Q

Do polar bonds form because atoms of the same element have equal electronegativities?

A

No

32
Q

Do polar bonds form because some atoms share electrons unequally?

A

Yes

33
Q

Are electrons transferred between atoms?

A

Yes

34
Q

Does ionic bonding form compounds known as salts?

A

Yes

35
Q

Do ionic compounds share electrons relatively equally?

A

No

36
Q

Does ionic bonding share electrons relatively equally?

A

No

37
Q

Does ionic bonding occur between elements with very different electronegativites?

A

Yes

38
Q

What is the Lewis structure for potassium fluoride?

A

[K]+ [:F:]

39
Q

Can ionic bonds form between two cations or two anions?

A

No

40
Q

In an ionic bond between an alkali metal atom and a nonmetal atom, the anion is what?

A

Nonmetal

41
Q

The lack of subscript on the first part of the chemical formula CuSO4?

A

There is one Nitrogen atom.

42
Q

How many atoms are represented by the chemical formula CuSO4

A

Six

43
Q

Does a superscript on a chemical formula indicate the number of atoms?

A

No

44
Q

What would be the chemical formula that would represent the ionic compound potassium nitride?

A

K3N

45
Q

According to the periodic table, what ratio of ammonium (NH4) to chlorine (Cl-) ions would you expect to find in ammonium chloride?

A

1:1

46
Q

What is the formula for aluminum oxide? (Aluminum has an oxidation state of +3)

A

Al2 O3

47
Q

What is the oxidation number for iron in the compound iron (II) sulfate FeSO3?

A

+2

48
Q

What is the name for the covalent compound SF6?

A

Sulfur hexafluoride

BJU Physical Science (7 decks)

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