RATES OF REACTIONS

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 reaction rate?

Back

The reaction rate is the speed at which reactants are converted into products in a chemical reaction.

Front

What factors affect the rate of reaction?

Back

Factors include concentration of reactants, temperature, surface area, and the presence of catalysts.

Front

How does increasing temperature affect reaction rates?

Back

Increasing temperature generally increases reaction rates because particles move faster and collide more often.

Front

What is surface area in the context of reactions?

Back

Surface area refers to the exposed area of a solid reactant. A larger surface area allows more collisions between reactants, increasing the reaction rate.

Front

What is a catalyst?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

Front

What is the effect of concentration on reaction rates?

Back

Higher concentration of reactants typically leads to an increased rate of reaction due to more frequent collisions.

Front

What is the 'squeaky pop test'?

Back

The 'squeaky pop test' is a method used to test for hydrogen gas. When hydrogen is ignited, it produces a characteristic 'pop' sound.

Front

What is the chemical symbol for Calcium?

Back

The chemical symbol for Calcium is Ca.

Front

What happens to the rate of reaction when particle size decreases?

Back

When particle size decreases, the surface area increases, leading to a higher rate of reaction.