Vocabulary that Matters
When one or more substances are changed into new substances is called this.
What is a chemical reaction?
In chemical reactions the -> symbol stands for this.
What is yields?
When the number of atoms are equal on both sides of the equation, this law has been fulfilled.
What is the Law of Conservation of Mass
The result of an acid-base reaction
What is neutralization with the products of water and a salt?
Oxygen does not normally occur as a single atom, but forms molecules of 2 or 3 atoms. The symbol that allows communication of the molecules is
What is a subscript?
When the number of atoms is equal on each side we say that the equation is this.
What is balanced?
When heat is produced, light is emitted, or a precipitate is formed this is an indication of this
What is a chemical reaction/change?
These are used to help balance chemical equations.
What are coefficients?
The 3 chemical properties of matter.
What is reactivity, flammability and oxidation?
The symbol (g) stands for this in a chemical equation.
What is a gas?
A chemical reaction that absorbs heat from the environment, and feels cold at the end
What is a endothermic reaction?
In the chemical reaction, Mg + O -> MgO, the compound MgO is located on the right side of the arrow is known as
What is the product?
The way you can tell if a chemical equation is balanced, such as
4 Fe + 3O2 --> 2Fe2O3
What is count the number of each specific atom on each side of the arrow. If they are all the same on each side, the equation is balanced
A chemical reaction the releases heat into the environment and feels hot at the end
What is an exothermic reaction?
CsF is an example of this
What is a compound?
Can be used to describe either an element, molecule or a compound
What is a substance?
Elements form compounds in order to satisfy this characteristic.
What is a complete octet or a full electron shell?
The meaning of the 2 in front of one of the reactants and the product of 2Li + Br2 --> 2LiBr
What is a coefficient, that multiplies that substance by that number.
The amount of energy entering a chemical reaction is equal to the amount of energy leaving the chemical reaction.
What is conservation of energy?
The reason chemical equations must be balanced is
It demonstrates the Law of Conservation of Mass
This term refers to a substance that has been dissolved in water
What is an aqueous solution?
These 3 things are essential in writing a chemical equation.
What are reactants, an arrow, and products?
The meaning of the number 2 in the compound H2O
What is a subscript, which tells how many atoms of that particular element are in that compound. (2 atoms of Hydrogen)
Four factors that can affect the rate of a chemical reaction
What are temperature, concentration of a reactant, surface area and a catalyst?
The mass of the reactants and the mass of the products in a reaction is determined by
What are the atoms involved in the reaction.