Periodic Table And Bonding Flashcards
1
Q
What are the Vertical Columns and what do they show?
A
- Groups
- Shows Number is electrons in its outer shell
- E.g. group 1 = 1 electron in outer shell
2
Q
Describe Non-Metals:
A
- Poor conductors of electricity
* Acidic - dissolve in water to form solutions with a pH less than 7 because they neutralise bases
3
Q
Describe Metals:
A
- Conduct electricity
- Metal oxides are basic
- Dissolve to form a pH more than 7 because they neutralise acids
- Giant structure of positive ions
- Held together by metallic bonding
- Malleable - ions slide over each other
4
Q
What are Noble gases?
A
- Group 0 elements
- E.g. helium, neon, argon
- Inert, colourless gases
5
Q
What are Anions?
A
- Negative ions form when atoms gain electrons
- Have more electrons than protons
- Group 5,6,7
6
Q
What are Cations?
A
- Positive ions form when atoms lose electrons
- Have more protons than electrons
- Group 1,2,3
7
Q
What is the symbol for Ammonium?
A
NH4^+
8
Q
What is the symbol for Carbonate?
A
CO3^2-
9
Q
What is the symbol for Nitrate?
A
NO3^-
10
Q
What is the symbol for Sulfate?
A
SO4^2-
11
Q
What is the symbol for Hydroxide?
A
OH^-
12
Q
What is the symbol for Hydrogen?
A
H^+
13
Q
What is the definition for Ionic Bonding?
A
Electrostatic force of attraction between oppositely charged ions
14
Q
What are Ionic Compounds?
A
- Giant ionic structure
- Very strong so a lot of energy needed to break attraction
- High melting and boiling point
15
Q
What is the Definition for Covalent Bonding?
A
Electrostatic attraction between negatively charged shared electrons and positively charged shared pair of nuclei
