Question

Five examples of Chemical reactions, for each, describe one way you could increase or decrease the rate of the reaction.

Answer 1

synthesis, decomposition, single replacements , double replacement, and combustion. is the 5 chemical reactions.

Explanation:

this is what each reaction does

synthesis shows multiple reactants combine to form a single product.

decomposition only one reactant breaks down into two or more products

in single replacements only one element replaces another in a compound.

in double replacement reactions in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.

for combustion, a fuel undergoes oxidation by reacting with an oxidising agent, so that it can get the release of energy.

Answer 2

Rusting of iron: This is a chemical reaction that occurs when iron reacts with oxygen in the presence of water to form rust. To increase the rate of rusting, you could expose the iron to a more humid environment or to water. To decrease the rate of rusting, you could coat the iron with a layer of paint or oil to prevent it from coming into contact with water and oxygen.

Digestion of food: This is a chemical reaction that occurs when enzymes in our stomach break down the food we eat. To increase the rate of digestion, you could chew your food thoroughly before swallowing to increase the surface area of the food particles and make them more accessible to the enzymes. To decrease the rate of digestion, you could eat food that is high in fiber, as fiber takes longer to break down and can slow down the digestion process.

Combustion of gasoline: This is a chemical reaction that occurs when gasoline reacts with oxygen to produce energy and carbon dioxide. To increase the rate of combustion, you could increase the amount of oxygen available to the gasoline by increasing the airflow to the engine. To decrease the rate of combustion, you could decrease the amount of oxygen available to the gasoline by reducing the airflow to the engine.

Fermentation of bread: This is a chemical reaction that occurs when yeast consumes sugar and produces carbon dioxide, which causes the bread to rise. To increase the rate of fermentation, you could add more yeast to the dough or increase the temperature of the environment to encourage yeast growth. To decrease the rate of fermentation, you could decrease the temperature or add less yeast to the dough.

Corrosion of copper: This is a chemical reaction that occurs when copper reacts with oxygen in the air to form copper oxide. To increase the rate of corrosion, you could expose the copper to more oxygen or to a more humid environment. To decrease the rate of corrosion, you could coat the copper with a layer of varnish or wax to prevent it from coming into contact with oxygen and moisture.