Age 12-14: Concept 1 - Semester 1: Unit 1

This unit covers the structure and properties of matter. You will explore atoms and their components, and you will create atomic models to help you better understand the organization of those components. Next, you will learn more about elements and their properties as well as how the periodic table of elements organizes them.

The unit also examines the differences among the various states of matter and how those states influence properties such as density, volume, and solubility. The final project builds upon your knowledge by asking you to survey items in your home and consider how matter and its properties influence the items' structure and function.

Other Items You May Need

The Age 12-14 semester 1 science units require materials from the Semester 1 Science Kit.
$85.00 Not available for purchase. #1774 Age 12-14 - Semester 1 - Science Kit


  • Able to read and comprehend novels at an 8th or 9th grade reading level
  • Able to write multiple paragraphs on a topic
  • Can write a five-paragraph essay
  • Usually used by children in the eighth grade

Table of Contents

  • Lesson 1: Invisible Matter
  • Lesson 2: Atomic Structure (2 Days)
  • Lesson 3: Properties of Matter I
  • Lesson 4: Solid, Liquid, Gas: What's the Difference?
  • Lesson 5: Properties of Matter II (2 Days)
  • Lesson 6: The Recurring (Periodic) Table of Elements (2 Days)
  • Lesson 7: Classifying Matter
  • Lesson 8: Final Project (3 Days)

Summary of Skills

Moving Beyond the Page is based on state and national standards. These standards are covered in this unit.
  • Be able to describe the structure and parts of an atom and identify the properties of an atom including mass and electrical charge. (Science)
  • Classify elements by their properties, including their melting temperature, density, hardness, and thermal and electrical conductivity. (Science)
  • Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements. (Science)
  • Compare the physical properties of pure substances that are independent of the amount of matter present including density, melting point, boiling point, and solubility to properties that are dependent on the amount of matter present to include volume, mass and weight. (Science)
  • Evaluate evidence that elements combine in a multitude of ways to produce compounds that account for all living and nonliving substances. (Science)
  • Explain how the periodic table is a model for classifying elements and identifying the properties of elements. (Science)
  • Identify the properties of an atom including mass and electrical charge. (Science)
  • Know each element has a specific number of protons in the nucleus (the atomic number), and each isotope of the element has a different but specific number of neutrons in the nucleus. (Science)
  • Know how to identify metals and nonmetals. (Science)
  • Know how to use the periodic table to identify elements. (Science)
  • Know that atoms of the same element are all alike but are different from the atoms of other elements. (Science)
  • Know that in gases the atoms and molecules are free to move independently, colliding frequently. (Science)
  • Know that in liquids the atoms and molecules are more loosely connected and can collide with and move past one another. (Science)
  • Know that in solids the atoms are closely locked in position and can only vibrate. (Science)
  • Know that the properties of the elements reflect the structure of atoms. (Science)
  • Know that the states of matter (solid, liquid, gas) depend on molecular motion. (Science)
  • Recognize that all matter is made up of atoms. (Science)
  • Recognize the basis for the organization of the periodic table. (Science)
  • Understand the organization of the periodic table based on the properties of the elements: identify regions corresponding to metals, nonmetals, and inert gases. (Science)
  • Understand the structure, classifications, and physical properties of matter. (Science)
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