Atoms
Periodic Table
Chemical Reactions
Forces
Weather
100
What has a positive charge in an atom?
Proton
100
Which of these groups in the Periodic Table is made up primarily of elements that are gases at room temperature?
Group 18
100
How many oxygen atoms are found in the following molecule?
C8H10N4O2
2 Atoms
100
A force that will work against motion in every situation is —
Friction
100
The map below shows the yearly average ocean surface temperatures off the coast of Africa.
Which African city is most likely to experience the most severe storms throughout the year?
Mombasa
200
What has a negative charge in an atom?
Electron
200
Using the information in the Periodic Table, it is possible to determine that atoms of the elements aluminum (Al), silicon (Si), and phosphorus (P) are most similar in terms of —
Mass
200
A student is using colored beads to make a model of aluminum sulfate, Al2 (SO4)3. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.
What combination of beads should the student use for the model?
2 blue, 3 yellow, and 12 green
200
For every action there is an equal and opposite reaction.
Newton's 3rd Law
200
El Niño refers to a period of time when the water in the Pacific Ocean is warmer than usual. What is the most likely effect on the weather of the Pacific coast of Mexico during an El Niño event?
An increase in precipitation.
300
Most of the volume (size) of an atom is occupied by —
Empty Space
300
Which group is in the shape of a "staircase?"
Metalloids
300
In the chemical reaction, calcium carbonate (CaCO3) was heated to form two new substances: calcium oxide (CaO) and carbon dioxide (CO2).
CaCO3 
CaO + CO2
A student heated 24.8 g of CaCO3. After the reaction, they measured 13.9 g of CaO.
What was the mass of the CO2 gas that escaped during the reaction?
10.9 g
300
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton's 1st Law
300
When watching the local meteorologist on television or when looking at a weather map online, there are often maps with an “L”, as seen below. The “L” represents an area of low atmospheric pressure on the surface of the Earth.
What is most likely occurring in the atmosphere in the area located at the “L” on the map above?
The air is rising at this location causing cloudy skies.
400
The quantity of which subatomic particle determines the element’s identity?
Protons
400
AMU increases from __________ and _____________.
right to left and top to bottom
400
How many atoms of each molecule are there in 2Al2(SO4)3?
Aluminum:
Sulfur:
Oxygen:
A=4
S=6
O=24
400
A sledgehammer has a mass of 3.5 kilograms. What net force, to the nearest whole newton, will a person need to apply to accelerate the sledgehammer at a rate of 4.0 m/s2?
14 N
400
The weather map shows air pressures in millibars.
Which set of conditions best describes the weather at the area of lowest air pressure?
Overcast skies with strong winds
500
How many valence electrons are in the atom oxygen?
6
500
Electronegativity increases from _______________ and ________________.
Left to Right and bottom to top
500
Which statement describes an action that most likely resulted in a chemical reaction?
A pan of water was heated on a stove, and steam formed.
A liquid was mixed with another liquid, and a precipitate formed.
A liquid was sprayed into the air, and a sweet odor was smelled.
A child blew through a wand filled with soap, and bubbles were produced.
A liquid was mixed with another liquid, and a precipitate formed.
500
A roller coaster containing three cars is accelerating at 10 m/s2 before it comes to an abrupt stop at the end of the ride. The mass of one car is 300 kg.
How much force was exerted on the roller coaster to bring it to a stop?
9000 N
500
The weather map shows the weather conditions for one day across the United States.
Based on the weather map, which city will most likely experience decreasing temperatures during the next 24 hours?
Minneapolis, because a cold front is approaching