Atoms, Elements, Compounds

Standards:

PS.1.A.1-Use the organization of the periodic table to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

PS.1.A.2-Construct and revise an explanation for the products of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

Objectives: At the end of the unit students will be able to…

Level 1:

• Classify a substance as being made up of one kind of atom when given the structural formula for the substance
• Compare the common properties of metal and nonmetals
• Describe the information provided by atomic number
• Classify elements as metals or nonmetals according to their location on the periodic table
• Differentiate between examples of conductors and insulators

Level 2:

• Describe the atom as having a dense, positive nucleus surrounded by a cloud of negative electrons
• Describe the information provided by atomic number and the mass number
• Differentiate between the properties and examples of conductors and insulators

Level 3:

• Classify a substance as being made up of one kind of atom or compounds when given the structural and molecular formula for the substance
• Identify pure substances by their physical and chemical properties
• Calculate the number of protons, neutrons, and electrons of an element given its mass number and atomic number
• Contrast various types of chemical bonds
• Explain the structure of the periodic table in terms of the elements with common properties
• Predict the chemical reactivity of elements using the periodic table
• Compare the mass of the reactants to the mass of the products in a chemical reaction or physical change as support for the Law of Conservation of Mass

Level 4:

• Describe how valence electrons determine how atoms interact and may bond
• Compare and contrast the types of chemical bonds
• Compare the mass of the reactants to the mass of the products in a chemical reaction or physical change as support for the Law of Conservation of Mass