Chemistry

Front

What are the compounds or elements present at the end of a chemical reaction?

Back

Products

Front

What are the compounds and elements that are present at the beginning of a chemical reaction?

Back

Reactants

Front

What does the law of Conservation of Mass state?

Back

Mass can neither be created nor destroyed during a chemical reaction.

Front

What is a decomposition reaction? Provide an example.

Back

A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more products. Example: MgCO3 --> MgO + CO2.

Front

What do chemical formulas represent?

Back

Chemical formulas represent how atoms are arranged in a chemical compound.

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 difference between an endothermic and exothermic reaction?

Back

An endothermic reaction absorbs heat, while an exothermic reaction releases heat.

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 role of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of each reactant and product involved in the reaction.

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the law of conservation of mass is obeyed, meaning the number of atoms for each element is the same on both sides of the equation.