Physical science: Matter pt.2

Periodic table of elements

all the known elements into a chart according to their properties

Chemical symbol

1 or 2 letters used to represent the element’s name

atomic mass

the average mass of an atom of that element

atomic number

the number of protons in an atom of that element

period

each row of elements in the periodic table

group/family

each column of the periodic table

chemical formula

a shorthand way of describing a chemical compound

coefficient

the large #3 in front of the H

electron-dot diagrams

another way to represent molecules and compounds

chemical reaction

takes place when one or more substances change to form new ones

reactants

the substances that undergo the change

products

substances that result from this change

chemical equation

a way of describing a chemical reaction using chemical formulas

law of conservation of mass

matter can be neither created or destroyed

mixture

a combination of 2 or more substances that have not combined chemically

solution

a mixture that looks like a single substance and has the same properties throughout

suspension

when the components in a mixture dispersed but large enough to see and settle out

solute

the substance that does the dissolving

solvent

the substance that gets dissolved

solubility

the ability of a substance to dissolve in another