Understanding Chemical Reactions and Conservation

Front

What is a chemical reaction?

Back

A chemical reaction is a process in which substances (reactants) undergo a transformation to form new substances (products).

Front

What does the law of conservation of mass state?

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

Translate the balanced chemical equation @@N_2 + 3H_2 ightarrow 2NH_3@@ into words.

Back

Nitrogen reacts with hydrogen to form ammonia.

Front

In the reaction @@C_6H_{12}O_6 + 6O_2 ightarrow 6CO_2 + 6H_2O@@, how many carbon atoms are in the reactants?

Back

There are 6 carbon atoms in the reactants.

Front

What happens to the atoms of the reactants during a chemical reaction?

Back

The atoms of the reactants recombine to form new products.

Front

If a chemical reaction starts with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?

Back

There should be 6 atoms of carbon (C) in the products.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, reflecting the conservation of mass.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is upheld, showing that matter is conserved during the reaction.

Front

What can happen to gases during a chemical reaction?

Back

Gases can be released into the atmosphere, which may result in a decrease in the total mass of the products compared to the reactants.

Front

What is a reactant in a chemical reaction?

Back

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