Modeling Conservation of Mass/Patterns in the Periodic Table 2023

chemical equation

A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products

chemical formula

A combination of chemical symbols and numbers to represent a substance

chemical reaction

the process by which one or more substances change to produce one or more different substances

conserve

(v.) to preserve; to keep from being damaged, lost, or wasted; to save

Products

The elements or compounds produced by a chemical reaction / on the right side of the yield sign

Reactant

A chemical substance that is present at the start of a chemical reaction / on the left side of the yield sign

alkaline earth metals

group 2

metals, very reactive

gray-white

good conductor of electricity

alkali metals

Group 1, 1 electron in outer energy level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium

Halogens

Group 17 Contains nonmetals / Very reactive

Groups

Vertical columns on the periodic table

Periods

Horizontal rows on the periodic table

Coefficient

A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction / the "big numbers"

Law of Conservation of Mass

Matter is not created nor destroyed in any chemical or physical change / Matter IS rearranged though

Properties

characteristics used to describe an object

Subscript

A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound / the "small numbers"

noble gases

elements in group 18 of the periodic table

yield sign

the arrow in the middle of a chemical equation that separates reactants and products