Students explain the terms physical and chemical change. Then they read a passage of text and identify the six changes that have occurred and state if each change is a physical or a chemical change.
Students are given the formula of two different types of chlorophyll. Students name all the elements present, and how the number of atoms differs between the chlorophylls.
Task: Students place in order four beakers of copper sulphate solution from most to least concentrated. They then explain what would happen if two beakers were put together, and explain the term "concentration". Assessment focus: solutions.
Students classify six common substances as either a solid, liquid, or a gas. Students then group these substances into elements, mixtures, or compounds.