1666 TEKS header image

Knowledge and Skills Statement

Matter and energy. The student knows that matter is made of atoms, can be classified according to its properties, and can undergo changes.

the smallest particle of matter that has distinct physical and chemical properties; consists of a nucleus which contains protons and neutrons and an electron cloud which contains electrons

substance that occupies space, has mass, and is composed of microscopic particles

observable characteristics of matter that can be used to identify particular materials