Science - 2018-19
CH.2 h - Properties of Elements
The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations of:
h) chemical and physical properties.
Bloom's Levels: Analyze; Understand
- Chemistry studies matter and any changes that it undergoes. This study is organized through classification of not only the types of matter, but also the types of change that occur to matter.
- I can explain why some reactions are explosive.
UNDERSTANDING THE STANDARD
- The Periodic Law states that when elements are arranged in order of increasing atomic numbers, their physical and chemical properties show a periodic pattern.
- Periodicity is regularly repeating patterns or trends in the chemical and physical properties of the elements arranged in the periodic table.
- Physical properties refer to the condition or quality of a substance that can be observed or mreasured without changing the substance's composition. I mportant physical properties are density, conductivity, melting point, boiling point, malleability, and ductility.
- Chemical properties refer to the ability of a substance to unergo chemical reaction and form a new substance.
- Reactivity is the tendency of an element to enter into a chemical reaction.
In order to meet this standard, it is expected that students will
h) distinguish between physical and chemical properties of metals and nonmetals.
differentiate between pure substances and mixtures and between homogeneous and heterogeneous mixtures.
chemical change, chemical property, chromatography, compound, crystallization, distillation, extensive properties, filtration, gas, heterogeneous mixture, homogenous mixture, intensive properties, law of conservation of mass, liquid, mixture, physical change, physical property, solid, solution, states of matter, substance, vapor