Chemical Bonding and Compounds Flashcards
1
Q
Elements combine to give compounds in order to achieve electron structure stability. This can be done in 2 ways
A
- Gaining or losing electrons to give ionic compounds with ionic bonds
- Sharing electrons to give covalent molecules with covalent bonds
2
Q
Ions and ionic bonds
A
Ions are found in extracellular fluid and intracellular fluid in the body.
CATIONS and ANIONS
3
Q
Cations
A
Are formed by losing electrons, are positively charged particles e.g. ca2+, Na+, K+… are metals
4
Q
Anions
A
Are formed by gaining electrons, are negatively charged particles e.g. Cl-, HCO-. are non-metals
5
Q
Ionic bonds
A
The force of attraction between an anion and cation.
6
Q
Main ions in Extracellular fluid (3)
A
Na+
K+
Cl-
7
Q
Main ions in intracellular fluid (1)
A
K+
8
Q
The shape of Covalent Molecules (4)
A
Linear- No of Covalent bonds 1
Bent- No of Covalent bonds 2
Pyramid- No of Covalent bonds 3
Tetrahedral- No of Covalent bonds 4
