Mass and Conservation
This type of system prevents matter from entering or leaving, ensuring that total mass remains constant
What is a closed system?
According to KMT, this particle property is increasing when temperature increases
What is average kinetic energy (or particle speed)?
Standard temperature in both Celsius and Kelvin is this value
What are 0 C and 273 K?
What happens to the pressure of a football inflated at 22 C when brought outside to 2 C
What is pressure decreases (colder particles move slower and hit walls less frequently)?
Why steel wool gains mass when burned in an open air flame
What is Oxygen gas from the air reacts and bonds with the iron atoms?
Er, reacting a solid and liquid in a sealed flask to make a gas and decreases total mass and that is totally true, and the reason why (or why not) is this
What is untrue because mass is conserved in a closed system?
Compare to particle spacing in a liquid, particle spacing in a gas is different in this way
What is that gas particles are spaced very far apart and liquid particles touch?
Converting a room temperature of 25 degrees C to Kelvin gives this value
[Music]
What is 298 K (25 + 273)
OR
or 295 (22 + 273)?
It's what happens to the volume of a flexible balloon if you double its Kelvin temperature
What is the volume doubles (Charles's Law)
this major flaw in Phlogiston theory was exposed by measuring mass during combustion of metals
Substances gained mass upon burning instead of losing phlogiston
the product of a reaction in a lab between an alka seltzer tablet and water in a beaker has less mass than the original reactants because
What is that carbon dioxide (CO2) gas escapes into the surrounding open environment?
On a microscopic particle level, these create gas pressure on container walls
What are frequent collisions of gas particles striking the container walls?
Converting 2.0 atm of gas pressure to kilopascals (kPa) gives this value. (1 atm = 101.3 kPa)
[Jeopardy Music]
What is 202.6 kPa?
When a 6.0 L gas at 1.0 atm is compressed to 2.0 L at constant temp, the new pressure is:
[Play Jeopardy Music]
What is 3.0 atm
Why Lavoisier is credited over Priestley for overhauling chemistry's foundation based on the same work, which Priestly did first.
What is he identified oxygen as an element and established Conservation of Mass with precise balances?
Carbon dioxide gas produced in a lab collects at the bottom of a container and allows pouring because
What is the density of CO2 is higher than that of the surrounding air?
Two key assumptions about Ideal Gases regarding volume or forces are that they
[jeopardy music]
What are that they have negligible volume and/or experience no attractive/repulsive forces and/or have perfectly elastic collisions?
A mercury barometer's column, when taken to the top of a mountain will go in this direction
What is Down?
If a gas is at 1.0 atm and 300 K. If heated to 600 K at constant volume, the new pressure is this
What is 2.0 atm?
Why an aluminum soda can with boiling water will crush when inverted into cold water
What is water vapor condenses into liquid, creating a low internal pressure so atmosphere crushes it?
It is true that dissolving solid sugar into water in a closed flask change total mass and the reason why or why not is this
No, all particles remain inside the system
Under these TWO extreme conditions, real gases stop behaving like ideal gases
What are low temperatures and high pressures?
The mathematical relationship between pressure and volume at constant temperature is that as volume decreases, pressure does this
What is INCREASES?
When gas occupies 10 L at 1.0 atm and 200 K. Heated to 400 K and 2.0 atm, the new volume is:
What is 10L?
Why a flask with a balloon over its neck inflates when placed on a hot plate
What is air particles move faster and hit harder/more often, pushing outward to expand volume?