chemistry adobe spark projectby: sahadi plata and cheyenne jones
Periodic table- the farther of the periodic table is Dmitri Mendeleev. the periods of the periodic table is all the numbers. some of the group names are alkali metals , alkaline earth metals , coinage metals , pnictogens , chalcogens , halogens , noble gases.
the information the number gives you is the "atomic" number .
a valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
The chemical equation for this reaction is written as: The '+' is read as 'reacts with' and the arrow '' means 'produces'. The chemical formulas on the left represent the starting substances, called reactants. The substances produced by the reaction are shown on the right, and are called products
new substances formed, as evidenced by the color changes and bubbles. Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.