click below
click below
Normal Size Small Size show me how
science ch-1 sect-2
Question | Answer |
---|---|
matter | is any thing that has mass and takes up space |
chemistry | is the study of properties of matter and how matter changes |
substance | is a single kind of matter that is pure, meaning it always has a specific make-up or composition and a specific set of properties. |
physical property | is a characteristic of a pure substance that can be observed with out changing it into another substance. |
chemical property | is a characteristic of a pure substance that describes its ability to change into different substances. |
element | is a pure substance that can not be broken down into any other substances by chemical or physical means. |
atom | is the basic particle from which all elements are made |
chemical bond | is a froce of attraction between two atoms |
molecule | groups of 2 or more atoms held together by chemical bonds |
compound | a pure substance made of 2 or more elements chemically combined in a set ratio. |
chemical formula | which shows the elements in the compound and the ratio of atoms. |
mixture | is made of two or more substances-elements, compounds, or both that are together in the same place but are not chemically combined. |
heterogeneous | u can see different mixtures |
homogeneous | when you cant see the differnt mixtures |
solution | a mixture of homogeneous mixture |