Unit 0: Measurements
Unit 1: Thermochemistry
Unit 1: Earth Stuff
Unit 2: Subatomic Particles
Unit 2: Periodic Table
100
Express 0.00507 in scientific notation.
5.07 x 10-3
100
Mr. C is making popcorn and he heats it in the microwave? What kind of heat transfer is happening with the popcorn?
Radiation (Microwave is emitting microwaves via radiation)
100
Seafloor spreading is when a new ocean crust is being made due to the plates moving apart from each other. What kind of plate interaction is happening?
Divergent Boundary
100
We learned about three subatomic particles (proton, electron, and neutron) in the class so far, which one do you think has the smallest mass?
electrons
100
Atoms in the same column share similar ________
Properties such as their valence electrons
200
A house has a length of 20.5 meters and a width of 30.15 meters. Using the correct number of significant figures, what is the area of the house?
618 m2 (3 significant figures)
200
Use the standard heats of formation provided to calculate the standard heat of reaction for the reaction between water and sulfur trioxide shown.
H2O(g) + SO3(g) → H2SO4(g)
Substance ΔH°f (kJ/mol)
H2O(g): –241.8
SO3(g): –395.8
H2SO4(g): –735.1
-581 kJ/mol
200
A picture of the layers of the earth is shown below:
The inner core is determined to be solid while the outer core has a liquid texture and these do not mix. Why do you think this is the case?
As you get closer to the center of the earth, the pressure is intensified which results to the solid state of the inner core.
200
Chlorine-37 is an isotope of chlorine. How many protons and neutrons does it have?
17 protons and 20 neutrons
200
A given atom has an electron configuration: 1s2 2s2 2p6 3s2 3p1
What element does this represent and how many valence electrons does this have?
Aluminum, 3 valence electrons
300
Mr. C is not good at throwing darts. When he threw the darts, they were far from the center and are spread out in the dart board just like in the picture shown. How do you rate Mr. C's skills based on accuracy and precision?
Mr C. is not accurate nor precise!
300
Based on the reaction graph, what kind of reaction is happening?
This is an exothermic reaction as the product's energy is lower than that of the reactants which resulted for heat to be released from the system and into the surroundings.
300
Which two plates are undergoing a transform boundary?
It is occurring between the Pacific Plate and North American Plate
300
When energy is being released through light during emission, what is the pathway of how an electron is traveling in the energy levels?
It starts from the highest energy level (excited state) and drops down to the lowest energy level (ground state).
300
Which element in the noble gas family is considered as an exception? Why do you think this element "breaks the rules"?
Helium, it can only accommodate two electrons due to its small size (one energy level)
400
Determine the volume of an object if it weighs 6.85 grams and the object's density was discovered to be 4.50 g/cm3
1.52 cm3
400
What is the amount of heat required to raise the temperature of 10.0 g of copper by 25°C?
Given that the Ccopper = 0.385 J/g∙°C.
Hint: Please use the equation sheet
96.3 J
400
What kind of heat transfer is occurring as the magma is circulating in the mantle?
It is undergoing convection
400
Determine the energy of light when a certain light photon has a frequency of 9.50 x 108 Hz?
(Hint: Use your equation sheet)
6.29 x 10-25 J
400
Please provide at least three features of metals and describe them briefly:
1. Good conductors of heat and electricity
2. Malleable: can be molded into different shapes
3. Ductile: can be drawn up into a wire
500
With the correct number of significant figures, determine the sum of the problem below:
505.59 + 6069.856 =
6575.45 (2 Decimal Place)
500
What does the law of conservation of mass/matter mean?
Mass/Matter is conserved all the time
"Whatever amount you started with, you should have the same amount after"
500
How are mountains being created such as the Mt. Everest?
This is when two continental plates are colliding toward each other (convergent boundaries).
500
Determine the frequency of light if it has a wavelength of 555 nm.
Hints: Use the equation sheet
c= 3.0 x 108 m/s
1.0 x 109 nm = 1 m
5.41 x 1014 s-1
500
From least to greatest electronegativity, please rank the following elements:
F, Mg, P, O
Mg < P < O < F
Left to Right: Electronegativity increases
Top to Bottom: Electronegativity decreases