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 second step in balancing any chemical equation.
What is to list and count the elements present on each side of the arrow?
100
This chemical equation is balanced (true or false):
K + MgBr --> KBr + Mg
What is true?
200
This is the name for the compound SO3.
What is sulfur trioxide?
200
This is the force that holds atoms in a compound together.
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?
200
Balance the following chemical equation:
__ N2 + __ H2 --> __ NH3
What is N2 + 3H2 --> 2NH3?
300
This is the formula for dinitrogen pentoxide.
What is N2O5?
300
Twelve grams of reactant X combine with fifteen grams of reactant Y. This is the total mass of the product(s). (HINT: Think of the Law of Conservation of Mass!)
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 know that there are this many atoms of that element within each molecule.
What is one?
300
Balance the following equation:
__ Ag2O --> __ Ag + __ O2