(around) Unit 1
Name the 3 states of matter
Um actually... Solid, liquid, and gas
(2.30m)(4.565m)
The solution of this equation (calc allowed)
Um actually... 10.5 m squared
Amount of atoms in a mol
Um actually... 6.022 * 10^23
Does an electron travel in a particle or in a wave.
Um actually... both :)
What is the difference between an element, compound, and a mixture
Um actually....
Element - pure substance (made from one atom)
Compound - multiple types of atoms (can only be separated by a physical change) and has consistent, equal ratios
Mixture - multiple PARTICLES, can be separated by a physical charge
0.00000000897 in factor label
Um actually.... 8.97 * 10^-9
460 pL in liters
Um actually... 4.60 * 10^-10
The electron configuration of Bi
Um actually... [Xe] 6s2 4f14 5d10 6p3
Our friend group was playing darts when Lucas hit A, Sophia hit B, Olivia hit C, and Canya hit D. Which is precise?
Um actually... B and D
Atoms of 2.5 moles of Cu
Um actually... 1.5 * 10^34
A piece of an unknown metal with a mass of 31.5g is heated to 100.0 degrees Celsius and dropped into 75.0g of water at 15.0 degrees Celsius. The final temp of the system is 18.6 degrees Celsius.
The specific heat of the metal
Um actually... J/g(degrees)C
What happens to the radius as you go across and why?
You see a phase change diagram of cooling water. At what point is its condensation point draw it out and show was the water molecules look like at this point
Um actually... its condensation point is 100 degrees Celsius.
To fertilize your lawn you should apply 5.0 pounds of fertilizer per 550 square feet (5.0lbs/550 ft^2). If the are of your lawn is 4840 square yards, how many pounds of fertilizer do you need.
Um actually... 400 lbs
The energy (in J) if a beam of red light has a wavelength of 650 mm
Um actually .... 6.5 * 10^2
Heisenberg uncertainty principle
Um actually... you cannot know the precise amount of energy and the precise amount of energy at the same time
The 4 ways you can separate a mixture physically (example for each)
Um actually.....
Extraction (insoluble) - pour mixture into the tunnel and allow bottom layer to get out [water and oil]
Evaporation (soluble) - put mixture over heat and allow one to get to its boiling point while other stays
Distillation (soluble) - put mixture in a container over heat, one stays in container and while the other boils and goes into an over tube and condescends back into a liquid
Filtration (insoluble) - pour mixture through a filter
The amount of atoms in a 25.0 g sample of Cu2S
HINT: find # of Cu2S mcs in sample then find total # of Cu atoms for that # of mcs
Um actually... 1.89 * 10^23 atoms of Cu
Propane is a hydrocarbon, a compound composed of only carbon and hydrogen. It is 81.82% carbon and 18.18% hydrogen
The empirical formula of this sample.
Um actually... C3H8