P2 TWIG Exploring Chemical Reactions

Front

What are reactants in a chemical reaction?

Back

Reactants are the substances that are present at the start of a chemical reaction and undergo change to form products.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

In the equation Na + Cl -> NaCl, what are the reactants?

Back

The reactants are Na (sodium) and Cl (chlorine).

Front

In the equation Na + Cl -> NaCl, what is the product?

Back

The product is NaCl (sodium chloride).

Front

What does the arrow in a chemical equation represent?

Back

The arrow represents the direction of the reaction, indicating that reactants are transformed into products.

Front

What is the difference between coefficients and subscripts in a chemical formula?

Back

Coefficients indicate the number of molecules, while subscripts indicate the number of atoms of each element in a molecule.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, following the law of conservation of mass.

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.

Front

What is a chemical reaction?

Back

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

Front

What is an example of a simple chemical reaction?

Back

An example is the reaction of hydrogen and oxygen to form water: 2H2 + O2 -> 2H2O.