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WorksheetsFuels Unit Test 2024
Total questions: 27
Worksheet time: 35mins
Which of the following is a reactant in the following equation?
6O2 + C6H12O6 --> 6CO2 + 6H2O
CO2
H2O
O2
What type of reaction is this?
2NaHCO3 --> Na2CO3 + H2O + CO2
Single Replacement
Combustion
Decomposition
Synthesis
What type of reaction is this?
2Na + 2H2O --> 2NaOH + H2
Single Replacement
Double Replacement
Synthesis
Decomposition
Which coefficient should be placed in front of NH3 to balance this equation?
__NH3 + H2SO4 --> (NH4)2SO4
1
2
4
8
Which coefficient should be placed in front of Lithium to balance this equation?
AlCl3 + __Li --> 3LiCl + Al
1
2
3
6
Get fired up! What type of reaction is this?
CH4 + 2O2 --> 2H2O + CO2
Combustion
Synthesis
Double Replacement
Single Replacement
Which law states that Matter cannot be created or destroyed?
Law of Conservation of Matter
Law of Gravity
Law of Equivalent Exchange
Law of Matter ad Infinitum
Over the course of the next 20 years you are watching fireworks with your child who asks you, "Is it magic?" You think back to your high school chemistry class and say, "Well, junior, it's better than magic. It's really cool chemistry! Energy that is stored in the fireworks' molecules is released as heat, light, and sound. This is a great example of a central idea in science known as the __________________.
Activation Energy
Heat (Thermal) Energy
Absorption of Chemical Energy
Law of Conservation of Energy
Which graph describes this combustion reaction?
Reactants in an endothermic reaction have a __________ energy than the products.
Higher
Lower
Is the reaction endothermic or exothermic?
Endothermic
Exothermic
Isothermic
Nonthermic
The graph shows the energy associated with bonding of three different molecules. The internuclear distance is another way of saying the distance between the atoms' nuclei. Which line represents the bonding of the atoms with the strongest attraction?
a
b
c
All of the molecules' atoms have the same attraction
What is the formula to needed to calculate heat energy required to raise the temperature of any substance?
∆H=∆T x m x Cp
P1 V1 = P2 V2
PV = nR T
KE = 1/2mv2
What is Specific Heat?
The amount of energy required to increase the temperature of 1g of a material by 1°C.
The amount of energy required to increase the temperature of 1kg of a material by 10°C
The amount of energy required to increase the temperature of 1kg of a material by 1°C.
The amount of friction required to increase the temperature of 1kg of a material by 1°C.
What would be the effect on the particles if more heat is supplied to the system?
A high specific heat means...
A substance heats up with little energy added
It requires more energy to heat up the substance
How much energy is needed to break the bonds of a methane molecule, CH4?
4 x -413 = -1652 KJ/mol
-413 KJ/mol
5 x 413 = +2065 KJ/mol
4 x 413 = +1652 KJ/mol
How many C-H bonds are there in butane?
3
4
10
13
14
Which container will have lower pressure?
First container
second container
During which engine stroke does a chemical reaction occur?
exhaust stroke
power stroke
comression stroke
intake stroke
What does a calorimeter directly measure?
change in temperature
kinetic energy
specific heat
radiation
What does this graph say about electric vs. hydrogen vehicles?
Electric vehicles will have a problem with range as it requires more mass to hold larger batteries.
Hydrogen vehicles will have a problem with range as it requires more mass to hold larger batteries.
Hydrogen vehicles will always be heavy.
Electric vehicles will always be light.
According to the diagram which vehicle is cheaper to produce right now?
Hydrogen is cheaper
Electric is cheaper
They are both the same cost.
What is one way we can extract hydrogen in a science lab
Electrolysis
Oxygenation
Carbon Unit Extraction
Hydrogen Blasting
What is the chemical formula for Water
H20
NaCl
HCl
H2N2
