Q: Electronegativity only affects molecules with what type of bond? A: Nonpolar.
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Q: Electronegativity only affects molecules with what type of bond? A: Nonpolar
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Transcript of Q: Electronegativity only affects molecules with what type of bond? A: Nonpolar.
Q: Electronegativity only affects molecules with what type of bond?
A: Nonpolar
Q: What is the word for “equally shared electrons”?
A: Oxygen
Q: One of the strongest elements (based on electronegativity) is….
A: delta symbol δ
Q: How is electronegativity represented in a molecule?
A: Stronger element
Q: Who becomes negative, the stronger or the weaker element?
A: CH4 (methane), H2 (Hydrogen gas)
Q: Give two examples of nonpolar molecules.
A: H20 (water), CO2 (carbon dioxide)
Q: Give two examples of polar molecules.
A: solution the same throughout
Q: Define homogenous.
A: Aqueous because water is the solvent
Q: NaCl + H2O–What type of solution is this? Why?
A: Ionic and polar covalent
Q: What two specific bond types are hydrophilic?
A: nonpolar bond
Q: What specific bond type is hydrophobic?
A: Hydrophilic because of the charges that make it want to split up
Q: Which, hydrophilic or hydrophobic, mixes with water? Why?
A: Hydrogen bond
Q: The bond between the oxygen of one water molecule and the hydrogen of another is what type of bond?
A: 4 total, 2 hydrogen and 2 covalent
Q: How many bonds can a single oxygen of water have? What types of bonds are these?
A: One is between like substances and the other is between two different substances
Q: What is the difference between cohesion and adhesion?
A: Cohesion
Q: Which, cohesion or adhesion, applies to surface tension?
A: Amount of heat absorbed/lost for 1g to change 1⁰C
Q: Define and explain specific heat.
A: High because it can store and hold on to the heat
Q: Does water have a high or a low specific heat? Explain.
A: Short time because it easily gives off the heat, it cannot store it
Q: Does it take a long time or a short time for something with a low specific heat to change in temperature? Why?
A: Solid
Q: In what state is water less dense, a solid or a liquid?
A: Expands
Q: At temperatures above 4 degrees Celsius, water _______ (expands or contracts) as it warms.
A: 0⁰C
Q: At what temperature does water become locked into a crystalline lattice?
A: 4 hydrogen bonds
Q: In crystalline lattice, how many bonds does each water molecule have?
A: Contracts
Q: From 0 degrees to 4 degrees, water ______ (expands/contracts).
A: Hydrogen is very weak and oxygen is very strong. It wants to bond with anything.
Q: Why is water the solvent of life?
A: Covalent bond
