I created these 10 versatile mini-assignments to help my students fully understand the differences between elements, molecules, compounds and mixtures.
These assignments can be used as warm-ups, exit cards and/or short quizzes.
Each mini-assignment is formatted to be cut and glued into a composition notebook should that be the way you would like to use it.
My students are given the following vocabulary, along with a periodic table, to help them learn about different ways we classify matter in addition to other introductory lessons. A printable student page of these words is provided.
1. Matter – anything that has mass and takes up space
2. Atom – smallest unit of a chemical element
3. Chemical Element – a pure substance that is composed of only one type of atom – all naturally occurring chemical elements are listed on the periodic table
4. Molecule – smallest unit of matter composed of two or more bonded atoms
5. Molecular element – molecule composed of two or more bonded atoms of the SAME element
6. Compound – molecule composed of bonded atoms from two or more DIFFERENT elements
7. Pure substance – matter composed of a single element or compound
8. Mixture – different compounds and/or elements that are NOT bonded, but only mixed together
9. Solution – liquid mixture in which a substance is dissolved in another substance
10. Alloy – mixtures of metals