click below
click below
Normal Size Small Size show me how
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 |