This is a worksheet I use in my introductory lessons on forms of matter to help my students practice sorting matter into categories such as chemical element, molecular element, molecule or compound. Students also identify matter by whether it is a pure substance or mixture. Mixtures can be further divided into liquid solutions or alloys.
Students also identify matter by whether it is a pure substance or mixture. Mixtures can be solutions or alloys.
Answer key is included.
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 consists of only one type of atom – all naturally occurring chemical elements are listed on the periodic table
4. Molecule – smallest unit of matter consisting of two or more bonded NONMETAL atoms
5. Molecular element – molecule consisting of two or more bonded atoms of the SAME element
6. Compound – molecule consisting of bonded atoms from two or more DIFFERENT elements
7. Pure substance – sample of matter consisting of a single type of element or compound
8. Mixture – different substances that are NOT bonded, but only mixed together
9. Liquid solution – a liquid in which a solid, liquid or gas is completely dissolved
10. Alloy – mixtures of metals
You may also like these warm-up/exit cards on matching matter to supplement your lessons.