Physical Science- Chapter 21

chemical shorthand that uses symbols to tell what elements is in a compound and their ratios

Reaction type: C₁₀H₈ + 12 O₂ ---> 10 CO₂ + 4 H₂O

What does (aq) stand for?

Reaction type: 8 Fe + S₈ ---> 8 FeS

Balance the following equation.  What are the coefficients?  H₂ + O₂---> H₂0

Reaction type: Mg + 2 H₂O ---> Mg(OH)₂ + H₂

An insoluble solid that forms when 2 ionic compounds in solution are combined is a

chem.reaction that occurs when a substance reacts with (O) creates energy in form of heat/light

Who is the father of chemistry?

the physical forms in which all matter naturally exists, most commonly solid, liquid, and gas

What does the arrow stand for?

Reaction type: AB+CD→AD+CB

process in which one or more substances are changed into new substances

Write the correct formula for when Magnesium and Chlorine combine

in a chemical reaction, the new substance that is formed

Reaction type: Pb(NO₃)₂ + 2 KI ---> PbI₂ + 2 KNO₃

in a chemical formula a number below and to the right of a symbol indicating number of atoms

Reaction type: 2 H₂O ---> 2 H₂ + O₂

What is the oxidation number for sulfur?

Reaction type: CH+O2→CO2+H2O

chemical equation with the same number of atoms of each element on both sides of the equation

Reaction type: A+B→AB

A reaction that releases energy.

# in a chem. equation that signifys the # of units of each substance thats in a chem. reaction

in a chemical reaction, the substance that reacts

Reaction type: AB+C→AC+B