Chemical Equations
In the chemical equation below, which is/are the products in the equation.
Cl2 + H2O --> HCl + HOCl
What is HCl + HOCl
A recipe requires baking at 218 degrees Celsius for 35 minutes. Using the formula given to you, which temperature is closet to this in Fahrenheit?
What is 425 Degrees Fahrenheit
A variable (often denoted by x) whose variation does not depend on that of another.
What is Independent Variable
A researcher observes a cricket. They record the number of chirps per minute at various temperatures.
Chirps per minute were 61,70,71,67,63
Which value is the median number of chirps per minute?
What is 67
Researchers test how tire pressure affects fuel efficiency. Four brand new cars (all the same make and model) are driven with different tire pressures. All cars travel the same distance at the same speed. The amount of fuel used is measured.
What is the independent variable for this experiment?
What is Tire Pressure
In the chemical equation below, which is/are the reactants in the equation?
C6H12O6 --> 2C2H6O + 2CO2
What is C6H12O6
The relationship between voltage (V), current (I), and resistance (R) is given by the formula V = IR
If a 12-volt battery is connected to a circuit with 30 ohms of resistance, what is the current in this circuit?
What is 0.4
A substance that changes in a chemical reaction.
What is a Reactant
The total number of satellites in orbit around Earth is given below.
Year # of Satellites
2019 2272
2020 3256
2021 4800
2022 6905
Find the mean number of satellites in orbit from 2019-2022 (rounded to the nearest whole number)
What is 4308
One parent with blue eyes has a genotype bb, while another parent with brown eyes has a genotype Bb.
What is the likelihood that these parents will have a child with blue eyes?
What is 50%
Looking at the equation B + F2 --> 2BF3, which coefficient will balance the left side of this chemical equation?
What is 2B + 3F2
A rye bread has a volume of 2250 cubic cm, a mass of 1305 grams, and a length of 8.5 inches.
Using the formula given, determine what the density of the rye bread is.
What is 0.58
A complex, interconnected network of multiple, overlapping food chains is called a ______.
What is Food Web
In the U.S., the number of plant and wildlife species classified as "endangered" in 2024 is as follows:
Plants 764
Birds 68
Insects 76
Reptiles 19
Mammals 66
What is the range in endangered species for these different organisms?
What is 745
A study test how magnetic field strength affects electric current. Wires are exposed to different magnetic field strengths, and the amount of electric current is measured.
Name the dependent variable in this experiment.
What is Electric Current
Carbon Dioxide,3CO2, and water, 4H2O, are both created when propane, C3H8, combines with oxygen, 5O2.
Write the correct chemical equation for this combustion.
What is C3H8 + 5O2 --> 3CO2 + 4H2O
A 5 kg bowling ball is bowled twice. If it is thrown 6 m/s on the first throw and 8 m/s on the second, what is the difference between the two bowls?
What is 70
What is the name for a simple, testable, educated guess or proposed explanation for an observation?
What is Hypothesis
Below you will see a commercial airplane's speed in 10-second intervals as it takes off on a runway:
Time (Sec)
10 20 30 40 50 60
Speed (mph)
23 83 135 181 223 247
What is the mean speed (in mph) of the plane during this period?
What is 158
An ornithologist observes birds over a 2-hour window
Geese 8, Robins 12, Crows 6, Doves 2
Given they spot a bird, what is the probability of it being a crow?
What is 21%
When C6H12O6 (Glucose) reacts with oxygen, 6O2, it creates carbon dioxide, 6CO2, and water, 6H2O.
What is the correct chemical equation for this process?
What is C6H12O6 + 6O2 --> 6CO2 + 6H2O
If the speed of sound is 1125 ft/sec and an F-15 jet has a top speed of 2812.5 ft/sec. To find the "mach speed" you compare the speed of the moving object to the speed of sound.
What is the jet's mach speed?
What is 2.5
A variable (often denoted by y) whose value depends on that of another.
What is Dependent Variable
The numbers below represent the number of wildfire disasters in the U.S. from 2017 - 2022. What is the mode of wildfire disasters in the U.S., during this time period, based on the numbers below.
3, 4, 1, 6, 3, 2
What is 3
Molarity refers to the concentration of a chemical in a solution, with units of moles per liter.
Lithium bromide, LiBr, is used inside air conditioners to keep moisture regulated. Suppose 0.2 moles of LiBr are dissolved in a liquid. The resulting solution is 4 L.
What is the molarity (mol/L) of LiBr in this liquid?
What is 0.05