Matter changes state when gaining energy, causing atoms and molecules to move rapidly. Physical changes are reversible, while chemical changes are not. All changes follow Law of Conservation of Matter
Molecules are tightly packed in definite arrangement with defined shape and volume. Crystalline solids have regular repeating patterns, amorphous solids lack order. Crystalline solids include ionic, molecular, atomic, and metallic types. Packing efficiency measures percentage of atoms in unit cell
Teach Starter offers printable vocabulary resources for Science topics. Resource includes 32 landform vocabulary cards with colorful images. Created by Brittany Kellogg, Ohio teacher and Teach Starter collaborator
Matter is anything that occupies space, has mass, and consists of atoms. Matter exists in three states: solids, liquids, and gases. Particles of matter are constantly in motion and have spaces between them
Critical temperature is the highest temperature at which a substance can exist as a liquid. Charles Cagniard de la Tour discovered critical point in 1822. Dmitri Mendeleev named it "Critical Temperature" in 1860
Matter is any substance that has mass and occupies space. Matter exists in three basic states: solid, liquid, and gas. Atoms and substances are made up of tiny particles called matter