Chapter 3 Flashcards
Study of matter
Chemistry
Part of the universe that has mass and volume
Matter
Smallest unit of an element that keeps the properties of the element
Atom
Pure substance made of only one type of atom
Element
Substance made of two or more types of atoms that are chemically bonded
Compound
Type of compound in which bonds are covalent
Molecule
Four states of matter
Solids, liquids, gases, plasma
Definite volume
Solid
Definite shape
Solid
Atoms are packed together in fixed positions
Solid
Only vibrate in place
Solid
Definite volume
Liquid
Indefinite shape
Liquid
Atoms are close together
Liquids
Atoms can overcome attractive forces to flow
Liquids
Indefinite volume
Gas
Indefinite shape
Gas
Atoms move very quickly
Gas
Atoms are far apart
Gases
Pretty weak attractive forces
Gases
Compressible
Gases
Hight temperature state in which atoms lose their electrons
Plasma
Depend on the amount of matter
Extensive
Do not depend on the amount
Intensive
Change in substance that doesn’t change the identity of the substance (grinding, cutting, melting)
Physical
Involves a reaction to take place, a new substance to form
Chemical change
Substances that cannot be broken down into simpler substances by chemical reactions
Elements
Chemical combinations of elements
Compounds
Made of elements
Compounds
Can be broken down into elements
Compounds