pure substances Flashcards
pure substance
pure substances in chemistry are a classification of matter (substances) that are made up of all the same type of particles
water (h2o), gold (Au), and salt (Nacl)
mixture
contains two or more substances simply mixed together. A mixture can be easily separated into it’s ingredients using simple techniques (e.g.. filtration)
Soft drink, chocolate milk, iron filings and sand
mixture
homogeneous
particles are spread evenly throughout the mixture
mixtures
heterogeneous
different components are scattered unevenly throughout the mixture
pure substance
element
and element is completly pure. there is only one type of thing. For example pure gold, pure silver. Water is not an element
Just think of the elements of the periodic table. Completely PURE!!
pure substance
compound
a compound is when there are two elements mixed into one. For example, water (h2o - hydrogen and oxygen)
Just think about the micky mouse ears, the head, and the ears