Covalent bonds formed between two nonmetals and they share electrons while ionic bonds are formed between nonmetal and metal and the nonmetal takes electrons 3. Use the periodic table to describe which elements form ionic bonds, and which elements form covalent bonds. Chemical Bonding
The blue highlighted elements are used to form ionic bonds The green highlighted elements are used to form covalent bonds Chemical Bonding
EXPERIMENT 2: MELTING POINTS AND TYPES OF BONDS Data Sheet Table 3: Melting Point Data Compound Name Time the Compound Took to Melt (sec) Melting Order (or, indicate if the compound did not melt) Type of Bond Sucrose 43 Sec 1 Covalent Sodium Chloride Did not melt 3 Ionic Stearic Acid 12 Sec 2 Covalent Post-Lab Questions 1. Which compound melted first? Did this agree with your prediction from Pre-Lab Question 2? Explain why or why not. The stearic acid melted first and yes it agreed because the more complex the bond the easier it melts. 2. Did any bubbling compounds release an odor or undergo a color change? The sucrose had bubbling and changed colors from a clear liquid to a dark brown and smelled liked burned sugar. The sodium chloride did not change.
- Spring '15
- Atom, Ion, Chemical bond, Structural Models Data