Structures and Bonding (AQA) Flashcards Preview

AQA Chemistry - GCSE > Structures and Bonding (AQA) > Flashcards

Flashcards in Structures and Bonding (AQA) Deck (25):
1

What are the 3 main types of bonds in chemistry?

Ionic, covalent and metallic

2

What are the particles involved in ionic bonding?

  • A metal and a non metal ion.
  • The particles are oppositely charged ions.

3

What are the particles involved in covalent bonding?

  • Non metal particles
  • The particles are atoms which share pairs of electrons.

4

What are the particles involved in metallic bonding?

  • Metallic atoms.
  • They share delocalised electrons.

5

Where do ionic bonds form?

In compounds formed from metals combined with non-metals.

6

Where do covalent bonds form?

In most non-metallic elements and in compounds of non-metals.

7

Where do metallic bonds form?

  • Metallic elements
  • Alloys.

8

What are electrostatic forces?

  • Attraction or repulsion forces between particles that are caused by their electric charges.
  • Between positive and negative ions

9

Does ionic bonding involve transfer or sharing of electrons?

Transfer

10

Does covalent bonding involve transfer or sharing of electrons?

Sharing "Co ..." = sharing

11

What is the electronic structure for a sodium atom?

2,8,1

12

What is the electronic structure for chlorine atom?

2,8,7

13

  • Which group and period is sodium in?
  • Electron configuration = 2,8,1
  • How can you tell his from the electronic structure?

  • Group 1 - Since it has one electron in the outer shell
  • Period 3 - since it has 3 electron shells

14

  • Which group and period is chlorine in?
  • Electron configuration = 2,8,7
  • How can you tell this from the electronic structure?

  • Group 7 - Since it has seven electrons in the outer shell
  • Period 3 - since it has 3 electron shells

15

  • Which group and period is oxygen in?
  • Electron configuration = 2,6
  • How can you tell this from the electronic structure?

  • Group 6 - Since it has six electrons in the outer shell
  • Period 2 - since it has 2 electron shells

16

  1. Do metals lose or gain electrons in ionic bonding?
  2. Are metallic ions positively or negatively charged?

  1. Lose
  2. Positive

17

  1. Do non-metals lose or gain electrons in ionic bonding
  2. Are non-metallic ions positively or negatively charged?

  1. Gain
  2. Negative

18

  • When metals from Groups 1 or 2 react with non-metals from Groups 6 and 7, which group do they then have the electronic structure of?

Noble gases (Group 0)

19

Draw a dot and cross diagram to show the electron transfer during the formation of an ionic compound of sodium chloride

20

Draw a dot and cross diagram to show an ionic compound of magnesium oxide

21

Describe the structure of a compound of sodium chloride (NaCl)

  • Ionic Bonding Giant structure of ions.
  • Held together by strong electrostatic forces of attraction between oppositely charged ions.
  • These forces act in all directions in the lattice

22

Describe the giant covalent structure of a diamond

  • Very strong Covalent bonds
  • Only Carbon atoms
  • Each carbon atom is joined to 4 other carbons

23

How can polymers be represented, for example a polymer of poly (ethene)

24

1) Draw a dot and cross driagram to represent covalent bonding in ammonia

2) How else can the bonding in ammonia be shown?

25

Describe the of giant structures of metal atoms

  • Arranged in a regular pattern.
  • The electrons in the outer shell of each metal atoms are delocalised - so move freely through the whole structure.
  • Sharing of delocalised electrons gives rise to strong metallic bonds