Science Teks 8.5d Flashcard - Lewis

Front

What are the steps involved in counting atoms in a chemical equation?

Back

1. Write down the chemical equation. 2. Identify the elements. 3. Count the number of atoms. 4. Balance the equation. 5. Verify the number of atoms.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the subscript in a chemical equation?

Back

A subscript is a number written below and to the right of a chemical symbol, indicating the number of atoms of that element in a molecule.

Front

Why is it important to balance chemical equations?

Back

To ensure the law of conservation of mass is obeyed and to show the correct ratio of reactants and products.

Front

What is the coefficient in a chemical equation?

Back

The coefficient in a chemical equation is the number that appears in front of a chemical formula, indicating the number of molecules.

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.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms for each element is the same on both sides of the equation.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.