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APSM Chemistry 02

Discovering Design with Chemistry chapter 02

Pure Substance substance whose properties are the same throughout
Mixture combination of two or more pure substances
Homogeneous mixture mixture whose composition is the same throughout the sample
Heterogeneous mixture mixture whose composition is different in different parts of the sample
Law of Mass Conservation In any chemical or physical process, the total mass of everything involved must remain the same
Element substance that cannot be chemically broken down into simpler substances
Compound pure substance that is composed of two or more elements
Law of Definite Proportions given compound will always have the same proportion of elements by mass
Molecule combination of two or more atoms joined together
Law of Multiple Proportions When two elements combine to form different compounds, a fixed amount of one element will combine with the other element so that the ratio of the masses of the other element is a small whole number
Isotopes Two or more atoms of the same element that have different numbers of neutrons substance whose properties are the same throughout
combination of two or more pure substances Mixture
mixture whose composition is the same throughout the sample Homogeneous mixture
mixture whose composition is different in different parts of the sample Heterogeneous mixture
In any chemical or physical process, the total mass of everything involved must remain the same Law of Mass Conservation
substance that cannot be chemically broken down into simpler substances Element
pure substance that is composed of two or more elements Compound
given compound will always have the same proportion of elements by mass Law of Definite Proportions
combination of two or more atoms joined together Molecule
When two elements combine to form different compounds, a fixed amount of one element will combine with the other element so that the ratio of the masses of the other element is a small whole number Law of Multiple Proportions
Two or more atoms of the same element that have different numbers of neutrons Isotopes
Created by: samundoacademy
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