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Why do elements combine?
To become stable
2 ways elements combine
Ionic and Covalent
Why do elements want 8 valence electrons?
To be stable
Chemically bonded substance made of 2 or more atoms
Substance made of 2 or more elements physically combined
What is the difference between a mixture and a compound?
Mixtures can be physically separated
What types of elements combine?
Metals and Non-Metals
What is the physical state at STP?
3 characteristics of a Ionic Compound
- Electrical Conducitvity
- Solubility in Water
- Melting Point
Why do ionic bonds have a high melting point?
- The bonds are strong
- (the stronger the bond, the harder to break)
Why would an ionic bond conduct an electrical current in a solution?
You're separating ions in the solution
What are oxidation numbers?
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