Boiling Point
What is Boiling Point
The temperature at which the vapor pressure of the liquid is equal to the pressure above the surface of the liquid, causing the liquid to become a vapor
What is Intramolecular Forces
Forces of attraction or repulsion that act within a molecule
Polar
Describes a molecule in which one or more atoms is slightly negative and one or more is slightly positive
Surface Tension
The elastic tendency of liquids that makes it acquire the least surface area possible
What was the effect of adding salt to the water in the mac and cheese lab
It boiled faster
(Bonus 100: It made it disgusting)
Why do different liquids boil at different temperatures
Different liquids boil at different temperatures because of the varying strengths of intermolecular forces between their molecules
What is Intermolecular Forces
Forces of attraction or repulsion that act between neighboring particles
Nonpolar
When a chemical bond has equal sharing of the pair of electrons that make up the bond
Solubility
The ability of a substance to dissolve in another substance to form a homogeneous mixture
What did we learn in the mac and cheese lab
We learned the effect of salt vs. no salt when boiling the water.
What temperature does water boil at sea level?
212 degrees Fahrenheit (100 degrees Celsius)
What is contact force friction
Contact Force Friction refers to the force of friction that occurs when two surfaces are physically touching each other
Volatility
The tendency of a substance to evaporate at normal temperatures
Molecule
A group of two or more atoms bonded together by chemical forces, representing the smallest possible unit of a chemical compound that can participate in a reaction
What liquid held the most paper clips and why?
Baby oil - it had a higher density?
What is the difference between Boiling and Melting Points?
A melting point is the temperature at which a solid changes into a liquid, while a boiling point is the temperature at which a liquid changes into a gas
Real-world examples of intermolecular forces
A real-life example of intermolecular forces is the ability of water to form hydrogen bonds with itself
Vapor Pressure
The pressure exerted by a liquid on the surrounding air as it tries to evaporate; can be altered by changes in concentration
Ionic Bond
A form of chemical bond that is characterized by the electrostatic attraction that binds oppositely charged ions together
What was the point of the Will it Overflow lab
We investigated surface tension of different liquids
How does heat affect Boiling Points?
Every liquid has different boiling points because of the varying strengths of intermolecular forces between their molecules
Real-world examples of intramolecular forces
A real-world example of an intramolecular force is the covalent bond holding the oxygen and hydrogen atoms together within a single water molecule (H2O)
Thermal Energy
The internal energy of a system, including the kinetic and potential energy of its particles
Conductivity
The property of a substance that allows an electric current or heat to move through the Substance
Why did the latex balloon pull water and the mylar one didn't?
The latex balloon was a conductor and the mylar one wasn't