Chem Test One M/E Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Material | particular kind of matter that has different properties that are used to characterize it |
Physical Property | is a characteristic that can be observed from a material without changing its chemical identity |
Physical Change | is a change in the form of matter but not in its chemical identity. All bonds remain intact. The same molecules are present. Temporary. |
Chemical Property | is a characteristic of a material that involves, or results in a chemical change. "ability, reactivity, or potential" |
Chemical Change | involves bond breaking and bond formation to give new products by means of a chemical reaction. Is a change in which one or more kinds of matter are transformed into one or more new kinds of matter. It yields new matter and new molecules. Permanent |
Three classifications of matter | elements, compounds, and mixtures |
Elements | are pure substances that cannot be broken down (decomposed) into simpler substances by chemical reactions. Have one kind of atom. |
Compounds | a pure substance made up of two or more elements in a fixed proportion by weight. Has two or more elements that have been chemically combined. |
Law of Constant Composition "Definite Proportions" | a pure compound, whatever its source, always contains definite, or constant proportions of the elements by mass |
Material | any particular kind of matter. Materials are either substances or mixtures of substances |
Substance | is a material that cannot be separates into different materials by any physical process. |
Pure substance | is a single chemical with definite physical properites |
Mixture | is a material that can be seperated by physical processes into two or more substances. It contains two or more pure substances that are not chemically combined |
Two types of mixtures | Homogeneous and Heterogeneous |
Homogeneous | mixture is uniform in its properties throughout. Density and other physical properties are the same at every point in this mixture. Ex- a solution |
Heterogeneous | mixture that consists of physically distant parts with different properties. occurs when components of mixture do not mix well |
Seperation of mixtures | one of the most important functions of chemists. If material is a mixture then it can manually be sorted into piles |
Filtration | a physical process in which a particular mixture is seperated into a solid and a liquid |
Distillation | used to serparate the mixture of liquids by their boiling points. |
Created by:
abigaildunham
Popular Chemistry sets