Unit 5: Chemical Reactions

Front

What is a chemical reaction?

Back

A process in which substances (reactants) are transformed into different substances (products) through the breaking and forming of chemical bonds.

Front

What does it mean when a substance is labeled (ppt) in a chemical equation?

Back

It indicates that a precipitate has formed, which is an insoluble solid that separates from the solution.

Front

What is the balanced equation for the reaction of nitrogen and hydrogen to form ammonia?

Back

N₂ + 3H₂ → 2NH₃.

Front

What is a net ionic equation?

Back

An equation that shows only the species that actually participate in the reaction, omitting spectator ions.

Front

What is the solubility rule for sodium acetate in water?

Back

Sodium acetate is soluble in water.

Front

What is oxidation in a chemical reaction?

Back

Oxidation is the process where an element loses electrons, resulting in an increase in oxidation state.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

What is the difference between an exothermic and an endothermic reaction?

Back

Exothermic reactions release heat, while endothermic reactions absorb heat.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What is a balanced chemical equation?

Back

An equation that has the same number of each type of atom on both sides, ensuring mass is conserved.