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WorksheetsEnergy & Reactions Basics
Total questions: 25
Worksheet time: 19mins
What is one kind of energy given off by a fire?
radiant to heat
thermal to radiant
chemical to radiant
Energy is the ability to do work or cause changes.
True
False
_________ energy is the energy of motion.
Potential
Kinetic
Thermal
Sound
_______ energy is stored energy.
Potential
Kinetic
Radiant
Sound
Heat Energy is called:
Radiant Energy
Chemical Energy
Thermal Energy
Mechanical Energy
Energy is found in many different forms, but it can be classified into two distinct categories: kinetic energy and ________________ energy.
electrial
potential
radiant
thermal
Electrical Energy is
kinetic energy
potential energy
what is a reactant?
a volatile chemical
a dangerous substance
the substance(s) you start with in a chemical reaction
the substance(s) you end with in a chemical reaction
what is a product?
a volatile chemical
a dangerous substance
the substance(s) you start with in a chemical reaction
the substance(s) you end with in a chemical reaction
The number of atoms you begin with in a chemical reaction...
must be the same as the number of atoms you end with
must be an even number
can be different to the number you finish with
changes depending on how much energy is formed
The red numbers in the image represent
subscripts
coeffiecients
roman numerals
none of the answer options are correct
The blue numbers in the image represent
subscripts
coeffiecients
roman numerals
none of the answer options are correct
When balancing a chemical equation, you can only change _________, you can never change _______!
coefficients, subscripts
subscripts, coefficients
formulas, subscripts
coefficients, formula units
What type of reaction involves a fuel being burned in the presence of oxygen in order to produce carbon dioxide and water?
Incomplete combustion
synthesis
nuclear
complete combustion
What is NOT product of complete combustion?
carbon dioxide
water
carbon monoxide
water
This type of combustion occurs when there is a limited supply of oxygen
Complete Combustion
Incomplete Combustion
If a flame is giving off smoke, this type of combustion is occurring...
Complete combustion
Incomplete combustion
Write a Balanced Equation for this complete combustion reaction: C2H4 + 3 O2 -->
C + CO + H2O
