Ebook Description :

Lesson summary atomsthe atomis the basic unit of matter made up of three subatomic particles protons have a positive charge and neutrons carry no charge strong forces bind protons and neutrons together in the nucleus. Section 2 1 the nature of matter study flashcards learn write spell test play match gravity created by lacy beaty terms in this set 21 the basic unit of matter is called a atom describe the nucleus of an atom made up of protons neutrons and is found in an atom positive nucleus neutral. 1 chapter 21 22 review packet answer key 21 the nature of matter lesson summary atoms the atom is the basic unit of matter made up of three subatomic particles protons have a positive charge and neutrons carry no charge strong forces bind protons and neutrons together in the nucleus. Start studying chapter 21 assessment the nature of matter learn vocabulary terms and more with flashcards games and other study tools. The nature of matter the basic unit of matter is the atom o the subatomic particles that make up atoms are protons neutrons and electrons o protons and neutrons together form the nucleus at the center of the atom o protons are positively charged particles and neutrons carry no charge o protons and neutrons have about the same mass