Topic 2 Structure and bonding Flashcards
1
Q
- What can link two atoms together?
A
a bond
2
Q
- What is an ion?
A
an atom that is charged because it has lost or gained one or more electrons
3
Q
- What happens when an ionic bond is formed?
A
One atom loses electrons to another atom to form oppositely charged ions that attract each other.
4
Q
- Which kinds of elements are usually involved in the formation of ionic bonds?
A
metals and non-metals
5
Q
- How is a positive ion formed and what is it called?
A
formed by the loss of electrons; cation
6
Q
- How is a negative ion formed and what is it called?
A
formed by the gain of electrons; anion
7
Q
- Why do atoms form ions?
A
to become more stable (like a noble gas)
8
Q
- What is the charge on the ions of elements in group 1 of the periodic table?
A
+1
9
Q
- What is the charge on the ions of elements in group 6 of the periodic table?
A
-2
10
Q
- What happens to the electrons in the outer shell of metal atoms when they form ions?
A
they are lost
11
Q
- What is the name of the ionic compound containing calcium and bromine only?
A
calcium bromide
12
Q
- How many electrons are in the outer shell of the elements in groups 5, 6 and 7?
A
5, 6 and 7
13
Q
- What kind of electron arrangement is most stable?
A
a complete/full outer shell
14
Q
- What are molecules?
A
groups of atoms held together by (covalent) bonds
15
Q
- Which type of atoms are covalent bonds found between
A
non-metal and non-metal
16
Q
- What happens to electrons between two atoms in a covalent bond
A
they are shared
17
Q
- What kinds of elements usually form molecules?
A
non-metals
18
Q
- What is the name of the force that holds molecules together in gases and liquids
A
intermolecular force
19
Q
- How strong are the forces of attraction between molecules compared to the bonds within molecules?
A
They are relatively weak.
20
Q
- Are simple molecules usually good conductors of electricity at room temperature?
A
No, they are poor conductors of electricity.
21
Q
- What are intermolecular forces?
A
forces of attraction between molecules
22
Q
- Do simple molecules have strong intermolecular forces between them?
A
No. They are described as weak.
23
Q
- Why are simple molecules poor conductors of electricity?
A
There are no charge carriers.
24
Q
- What strength of forces are there between different molecules of water?
A
weak
25
52. Does pure water conduct electricity?
no
26
53. What type of structure do diamond and graphite have?
(covalent), giant molecular
27
54. What does the term malleable mean?
(can be hammered or bent into a different shape
28
55. What type of bonding does copper have?
metallic
29
56. What atoms does metallic bonding happen between?
metal and metal
30
58. Why can metals conduct electricity?
electrons are free to move and carry charge
31
60. What are the particles inside a metal?
metal ions surrounded by sea of electrons
