C1 - Compounds Flashcards
1
Q
What is a compound and what is a property of it?
A
- A compound is two of more elements that are chemically combined.
- They have a fixed, definite formula.
2
Q
What does a compound which is formed from a metal and non-metal consist of?
How does this work?
A
-Ions.
- The metal atoms lose electrons to form positive ions and the non-metal atoms gain electrons to form negative ions.
- The opposite charges of the ions means that they’re strongly attracted to each other - this is ironic bonding.
3
Q
Can you give examples of compounds that are bonded ironically?
A
- Sodium chloride
- Magnesium oxide
- Calcium oxide
4
Q
What does a compound formed from non-metals consist of?
How does this work?
A
- Molecules.
- Each atom shares an electron with another atom - this is called covalent bonding.
5
Q
Can you give examples of compounds that are bonded covalently?
A
- Water
- Carbon monoxide
- Hydrogen chloride gas
6
Q
How are compounds represented?
A
-By formulas.
7
Q
Give an example of a formula that shows what atoms are in a compound.
A
Carbon + oxygen = carbon dioxide
C + (O)2 = C(O)2
