topic 2-3

the substances that react together

• soft water

• reactant

• product

• hard water

the substances produced

• soft water

• reactant

• product

• hard water

the number of atoms of each element is the SAME in both the reactants and the products; no atoms are added or taken away

• CONSERVATION OF ATOM

• reactant

• product

• Law of Conservation of Mass

In all chemical reactions, the total mass of the reactants is equal to the total mass of the product.

• CONSERVATION OF ATOM

• reactant

• product

• Law of Conservation of Mass

a symbolic representation of the type and amount of reactants and products in a chemical reaction

• CONSERVATION OF ATOM

• mass

• equation

• Law of Conservation of Mass

is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution

• CONSERVATION OF ATOM

• precipitate

• equation

• Law of Conservation of Mass

a solid with a near-perfect arrangement of atoms, ions, or molecules

• crystalline solid

• filtration

• equation

• Law of Conservation of Mass

the clear liquid left after a precipitate settles

• crystalline solid

• supernatant liquid

• equation

• Law of Conservation of Mass

water free from dissolved calcium and magnesium ions

• soft water

• supernatant liquid

• equation

• Law of Conservation of Mass

a white substance, mainly calcium carbonate, that forms on the inside of pipes and pans

• soft water

• supernatant liquid

• limescale

• Law of Conservation of Mass