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Chemistry Apoligia


Homonuculear Diatomic molecules N2 Nitrogen O2 Oxygen Cl2 Chlorine F2 Fluorine Br2 Bromine I2 Iodine At2 astatine H2 Hydrogen
pure substances A substance that contains only one element or compound.
Mixture A substance that contains defferent compounds and/or elements.
Heterogeneous mixture A Mixtrure whith a composition that is different depending on what part of the sample you are observing.
Homogeneous mixtures A mixture with a composition that is always the same no matter what part ogf the sample you are observing.
Chemical change A change that affects the type of molecules or atoms in a substance.
Physical change A change in which the atoms or molecules in a substance stay the same.
kintetic theory of matter molecules and atoms are in constant motion, and the higher the temperature, the greater their speed.
Created by: Kaitlyn shields