This type of reaction is where a hydrocarbon burns or explodes in the presence of oxygen, creating as a product carbon dioxide and water vapor.
What is combustion?
100
By definition, the Law of Conservation of Mass states that matter (mass) may not be __________ nor _________ .
What is created / destroyed.
100
This is found on the left side of the yields sign. In other words, what goes in to the reaction.
What is the reactant?
100
This is the first step in balancing any chemical equation.
What is to list and count the elements present on each side of the arrow?
200
This type of rxn is where one compound breaks down into two or more simpler elements or compounds.
What is decomposition?
200
This is the force that holds atoms in a compound together. (Hint: think small!!!)
What is chemical BOND?
200
This sign indicates the direction of the reaction, and separates reactants from products.
What is the yields sign OR the arrow?
200
When balancing a chemical equation, you are able to add or change these.
What are coefficients?
300
This type of rxn is where two elements chemically combine to form one new compound.
What is synthesis?
300
Twelve grams of reactant X react with fifteen grams of reactant Y. This is the total mass of the product(s).
What is twenty seven grams?
300
This is found on the POINTY side of the arrow. It is the end result of a chemical reaction.
What is the product?
300
Within a chemical formula, if you don't see a subscript, you can deduce that there are this many atoms of that element within each molecule.
What is one?
400
This type of rxn usually results in the formation of a precipitate. It is where one metal swaps his nonmetal with another metal's nonmetal.
What is double replacement?
400
This statement explains the difference between exothermic and endothermic reactions.
What is endothermic rxns result in lower temperatures (energy is a reactant) while exothermic rxns result in higher temperatures (energy is a product)?
400
This best explains the definition of the term coefficient.
What is the number of molecules of a given substance?
400
Once the number of atoms of each element balances on each side of the yields sign, this is the final step in balancing all equations.
What is to simplify the equation?
500
This type of rxn is where a more reactive element replaces a less reactive element in a compound. In analogy, it is where one element steals another element's girl, sending him home alone.
What is single replacement?
500
This is a way to speed chemical reactions.
Answers may vary, but should include: higher temperature, higher concentration of reactants, or increased surface area.
500
This best explains the term subscript.
What is the small number that denotes the number of atoms of each element within a compound?
500
Your TCAP test will want you to be able to explain that this is the common outcome of ALL CHEMICAL REACTIONS.
What is that a product is formed which has different properties than that of the reactants?