Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Bioscience > Week 2 > Flashcards

Week 2 Flashcards

(61 cards)

Start Studying
1
Q

Why do noble gases exhibit a high degree of stability?

A

The outer valence shell is filled with electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the octet rule?

A

elements tend to gain, lose of share sufficient electrons to achieve an electron configurations having 8 valance electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are ions?

A

Atoms with an unequal number of protons and electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are cations?

A

Positively charged ions (an atom which loses electron/s)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are anions?

A

Negatively charged ions (an atom which gains electron/s)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The transition metals have the ability to form more than one ion. How are these ions named?

A

Monatomic Cations
Monatomic Anions
Polyatomic Ions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Ferrous ion

A

Iron (II) ion - Fe2+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Ferric ion

A

Iron (III) ion – Fe3+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What suffix do most anion names have?

A

the suffix - ide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a polyatomic ion?

A

A polyatomic ion contains more than one atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Write names and molecular formula for two polyatomic ions.

A

Ammonium – NH4+

Hydroxide – OH-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Ionic bonds are…

A

a chemical bond resulting from the attraction between positive and negative ions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Covalent bonds are…

A

a chemical bond resulting from the sharing of electrons between two atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Electronegativity is defined as…

A

the measure of an atom’s attraction for electrons it shares in a chemical bond with an other atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Do electronegativity values increase or decrease across the periodic table (from metals to non-metals)

A

increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ionic compounds are formed between…

A

a metal and a non-metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Name the following:

BaCl2

A

barium chloride

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Name the following:

Na2SO4

A

sodium sulphate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Name the following:

Cu(NO3)2

A

copper nitrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Covalent compounds are formed between…

A

a non-metal and a metalloid or two non-metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

A covalent bond is formed by…

A

sharing one or more pairs of electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

The difference between a non-polar covalent and polar covalent bond is…

A

the level of difference in electronegativity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Non-polar covalent is when…

A

difference in electronegativity is less than 0.5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Polar covalent is when…

A

the difference in electronegativity is between 0.5 and 1.9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
A single bond is...
a bond formed by sharing one pair of electrons and represented by a single line between two atoms
26
A double bond is…
a bond formed by sharing two pairs of electrons and represented by two lines between the two bonded atoms
27
A triple bond is...
a bond formed by sharing three pairs of electrons and represented by three lines between the two bonded atoms
28
A lone pair is...
a valence electron pair which is not shared with another atom and is sometimes called a non-bonding pair
29
Name the covalent compound N2O
two nitrogen and one oxygen
30
Name the covalent compound SF2
one sulphur and two fluorine
31
A molecule will be polar when:
i) there are polar bonds | ii) the arrangement is not symmetric
32
VSEPR theory describes...
how the valance electrons of an atom may be involved in the formation of single, double, or triple bonds or they may be unshared.
33
VSEPR is...
Valence-shell electron-pair repulsion
34
In a trigonal planar shape the bond angle is ? degrees
120 degrees
35
In a trigonal planar shape there are ? bonding pairs of electrons and ? non-bonding pair(s) of electrons
6 bonding pairs (including 1 double bond) | 0 non bonding pairs
36
In a pyramidal shape the bond angle is ? degrees
109.5 degrees
37
In a pyramidal shape there are ? bonding pairs of electrons and ? non bonding pairs of electrons
3 bonding pairs | 1 non bonding pair
38
In a tetrahedral shape the bond angle is ? degrees
109.5 degrees
39
In a tetrahedral shape there are ? bonding pairs of electrons and ? non-bonding pair(s) of electrons.
4 bonding pairs | 0 non bonding pairs
40
In a bent shape the bond angle is ? degrees
109.5 degrees
41
In a bent shape there are ? bonding pairs of electrons and ? non-bonding pair(s) of electrons.
2 bonding pairs | 2 non bonding pairs
42
In a linear shape the bond angle is degrees
180 degrees
43
In a linear shape there are ? bonding pairs of electrons and ? non-bonding pair(s) of electrons.
4 bonding pairs (2 double bonds) | 4 non bonding pairs
44
A molecule will be polar when:
i) there are polar bonds | ii) the arrangement is not symmetric
45
What is an anion?
an ion with a negative electric charge
46
What is a cation?
an ion with a positive electric charge
47
What is a covalent bond?
a bond resulting from the sharing of electrons between two atoms
48
What is double bond?
a bond formed by sharing two pairs of electrons; represented by two lines between the two bonded atoms.
49
What is electronegativity?
a measure of an atom’s attraction for the electrons it shares in a chemical bond with another atom
50
What is an ion?
an atom with an unequal number of protons and electrons
51
What is an ionic bond?
a chemical bond resulting from the attraction between a positive ion and a negative ion
52
What is an ionic compounds?
a compound formed by the combination of positive and negative ions
53
What is a lewis electron dot diagram?
the symbol of the element surrounded by a number of dots equal to the number of electrons in the valence shell of an atom of that element
54
What are lone pair of electrons?
electrons of an atom that are unbonded
55
What is a non-polar covalent bond?
a covalent bond between two atoms whose difference in electronegativity is less than 0.5
56
What is the octet rule?
when undergoing chemical reactions, atoms of Group 1A to 7A elements tend to gain, lose or share electrons to achieve an electron configuration having eight valance electrons
57
What is a polar covalent bond?
a covalent bond between two atoms whose difference in electronegativity is between 0.5 and 1.9
58
What is a polyatomic ion?
an ion that contains more than one atom
59
What is a single bond?
a bond formed by sharing on pair of electrons; represented by a single line between two bonded atoms
60
What is a triple bond?
a bond formed by sharing three pairs of electrons; represented by three lines between the two bonded atoms
61
What does VSEPR stand for?
Valance Shell Electron-Pair Repulsion model

Bioscience (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions