BISC207 Chapter Notes - Chapter 2: Carboxylic Acid, Thermal Energy, Exothermic Process

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC207
• Professor: Nauen Jennifer

Document Summary

Hydrogen, carbon, nitrogen, and oxygen make up 96% of us. Unstable radioactive isotope- nucleus will eventually decay and release energy (radiation) A strong attraction where two atoms share electrons is a covalent bond. When atoms of different elements form a bond, they may pull shared electrons towards their nuclei with varying strengths- electronegativity. 0 > n > s = c = h = p. Ionic bonds- the electrons are completely transferred from one atom to another cation- positively charged ion. Polar- they carry a partial positive charge charge on one side and a negative charge on the other side. H20- small size, highly polar covalent bonds, bent shape. Surface tension- cohesive force caused by attraction between the molecules at the surface of a liquid. Water resists any force that increases its surface area. Specific heat- the amount of energy required to raise the temperature of 1 gram of a substance by 1 c.