Chapter 7: Chemical Reactions Overview Flashcards
Remember the meaning of chemical change.
a chemical change is when a chemical reaction has occurred
Describe the reactants of a chemical reaction
the reactants is the beginning if a chemical reaction, usually on the left side. The reactants changed into the products
Describe the products if a chemical reaction
The products are the result of a chemical reaction, usually on the right side. The products are the change of the reactants.
List the common evidence of a chemical reaction
A permeant change in color, formation of a gas, formation of a precipitate, change is temperature. Light is produced
Explain the meaning of + and –> used in a chemical equation
The plus represents two or more molecules, elements or compounds that make up the reactants or products. The arrow represents the chemical changed between the reactants and products.
Explain the meaning of (s, l, g, and aq) as used in a chemical equation.
(s) stands or solid, (l) lands for liquid, (g) stands for gas and (aq) stands for acquis. Each of these labels what each molecule or compound is.
Demonstrate how a chemical equation is written.
multiple reactants added to create a product or multiple products, through a chemical reaction
Explain the difference between subscripts found in a chemical formula and coefficients
found in a balanced chemical equation.
subscripts cannot be altered when balancing a chemical equation. Coefficients can be added when balancing an equation.
Remember in a chemical reaction atoms are neither created nor destroyed. Describe how
balancing the chemical equation for a reaction demonstrates the law of conservation of
mass
The number and type of atoms must be the same for both reactants and products
Define a precipitate associated with a chemical reaction.
A solid that results from a chemical reaction
Define soluble solid.
Can be dissolved in water
Define insoluble solid.
An insoluble solid is a solid that cannot be dissolved
Write and balance chemical equations that describe precipitation reactions.
Write balanced net ionic equations that describe precipitation reactions.
Define an aqueous solution
A solution that can dissolve in water
