Chemical Equations

Front

What is an element in chemistry?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

Identify the number of carbon atoms in the molecular formula C6H12O6.

Back

There are 6 carbon atoms in the molecular formula C6H12O6.

Front

In the reaction 2 Na + _ Cl2 -> 2 NaCl, what number should replace the blank?

Back

The blank should be filled with 1, indicating that one molecule of Cl2 is needed.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, ensure that the number of atoms of each element is the same on both sides of the equation by adjusting coefficients.

Front

What are the products in a chemical reaction?

Back

The products are the substances that are formed as a result of a chemical reaction, typically found on the right side of a chemical equation.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction, typically found on the left side of a chemical equation.

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the conservation of mass and ensures that the same number of atoms of each element are present before and after the reaction.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.