Name:

GRADE 8 STRUCTURE AND CHANGES OF MATTER

At the conclusion of this unit you will understand that…

• Matter has many forms, phases, and properties. Matter is never created or destroyed.

Inquiring scientific minds will be able to answer these essential questions...

• How is matter structured?
• What are matter’s properties?
• How does energy’s absorption or release affect the behavior of matter?
• How have the models of matter changed over time?
• What is the relationship among atoms, molecules, elements, compounds, and mixtures?
• How is the periodic table organized?
• How can matter be organized by its chemical and physical properties?
• What is the Law of Conversation of Mass and why is it important?

Key Scientific Concepts/Vocabulary (Spelling words)…

Alloy Atom Atomic Model

Atomos Catalyst Chemical change

Chemical equation Chemical properties Chemistry

Compound Corrosion Dilution

Dissolving Electrolysis Electron

Element Endothermic Exothermic

Gas Inference Law of Conservation of Matter/Mass

Liquid Luster Malleable

Matter Metal Metalloid

Mixture Model Molecule

Neutron Nonmetal Nucleus

Observation Organic Oxidation

Particle Periodic Table Phenol red

Physical change Physical properties Precipitate

Product Proton Reacting

Reactant Serial dilutions Solid

Sublimation Synthetic Tensile Strength

Young chemists will be able to….

• Make observations and inferences.
• Use the Periodic Table as a reference tool.
• Perform a variety of tests in order to identify substances.
• Demonstrate safe lab practices.
• Break down compounds using electricity, heat and acids.
• Accurately and precisely measure mass.
• Balance chemical equations of reactions.

People to know:

Niels Bohr Louis de Broglie John Dalton

Democritus Antoine Lavoisier Dmitri Mendeleev

Joseph Priestly Ernest Rutherford Sir Joseph John Thompson