Unit 1
What is the method for measuring the volume of an irregular solid?
What is water displacement
What layer of the atmosphere does the majority of weather occur?
What is troposphere
What type of nuclear reaction is the proton-proton pathway (Hydrogen to Helium nuclei)?
What is fusion
In class you measure an iron cube with a length, width, and height of 3.5 cm. You know that Iron has a density of 5.98 g/cm3. What is the volume AND mass of the iron cube?
m= 256.4 g; V= 42.9 cm3
What is the difference between air and wind?
What is: air is the substance, wind is the movement
What is 17.65 + 3.1 using significant figures?
What is 20.8
Explain how the rotation of the Earth affects temperature and wind direction:
What is: The direction of Earth’s rotation affects the direction of the wind. In the northern hemisphere, wind moves to the right and in the southern hemisphere wind moves to the left as it accelerates from a high to low pressure area.
What type of nuclear reaction emits an electron?
What is beta decay
What is the final temperature of 57.0 g of water that started at 11.0 oC and absorbed 9,220.0 J? The specific heat capacity of water is 4.184 J/g oC.
What is 49.66 oC
How many moles is in 67.9 g of Cu2SO4?
What is 0.304 moles
What is the definition of radiation?
What is: Heat transfer given off indirectly by electromagnetic waves
What is the molar mass of Ag(SO4)2?
What is 299.9 g
What type of nuclear reaction breaks down a nucleus after it collides with a neutron?
What is fission
A 28.0 g block of metal starts at 86.5 oC and is dropped into cold water. After the metal is dropped in, the temperature of the water reaches 38.5 oC. If the energy absorbed by the water from the block is 1,061.0 J, what is the specific heat capacity of the metal block?
What is 0.79 J/goC
Enclosed air with a volume of 3.35 L at a pressure of 895 mm Hg is allowed to expand to a volume of 7.72L. Calculate the partial pressure of O2 in the air if the pressure of N2 is 338.6 mm Hg, the pressure of CO2 is 2.8 mm Hg, and the pressure of Ar is 2.0 mm Hg.
What is 45 mm Hg
What type of heat transfer causes tectonic plates to move?
What is convection
What volume is occupied by 17.64 g of O2 at 27 °C and a pressure of 0.914 atm?
What is 14.8 L
Iodine has 2 natural isotopes. One isotope has a of 126.0 amu and has a relative abundance of 74.0 %. The other isotope has a mass of 127.0 amu and has a relative abundance of 26.0 %. Estimate the average atomic mass for this element to one decimal place.
What is 126.3 amu
As volume increases, temperature _________. This is called a __________ relationship.
increases; direct
Scientists are working with a sample of 5,800 Copper atoms. In order to find the average atomic mass, they first need to find the percent abundance of each isotope present in their sample. There are 1,400 atoms of Cu-51, 3,900 atoms of Cu-52, and 500 atoms of Cu-53. What is the percent abundance of each isotope?
What is: 24.1 % of Cu-51, 67.2 % of Cu-52, 8.6 % of Cu-53
Is condensing steam to water an endothermic or exothermic reaction?
What is exothermic
Calculate new temperature when 23.2 L at 20.0 °C is compressed to 3.85 L.
What is 48.6 K
If the half-life of uranium-232 is 64 years, how much of a 20 g sample will be left after 384 years?
What is 0.3125 g
The process of __________ is when a liquid goes to a gaseous state of matter
What is boiling
The half-life of Kr-83 is 6.07 days. If 9.9 grams are left after 48.56 days, how many grams were in the original sample?
What is 2,534.4 g