Pre AP - Balancing Equation Quick Check - Day 1

Front

How many elements are in the compound C2H8O?

Back

3

Front

Which equation is balanced?

Back

2Na + 2H2O --> 2NaOH + H

Front

What is a coefficient?

Back

The large number to the left of a formula.

Front

Balance this equation: _Mg + _Cl2 --> _MgCl2

Back

already balanced

Front

How many atoms of aluminum are on each side of the equation: 4Al + 3O2 --> 2Al2O3?

Back

4

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean for an equation to be balanced?

Back

The number of atoms for each element is the same on both sides of the equation.

Front

What is the purpose of balancing chemical equations?

Back

To obey the law of conservation of mass.

Front

What is the product of the reaction between sodium and chlorine?

Back

Sodium chloride (NaCl).

Front

What is the role of subscripts in a chemical formula?

Back

They indicate the number of atoms of each element in a molecule.