Chemistry - Chapter 2

product

substance formed in a chemical reaction

phase

a part of a sample with uniform composition and properties

physical change

substance formed in a chemical reaction

liquid

matter that flows but has a definite volume

mass

amount of matter that an object contains

element

the simplest form of matter with a unique set of properties

solid

matter with a definite shape and volume

solution

homogenous mixture

compound

contains 2 or more elements chemically combined in a fixed proportion

reactant

starting substance in a chemical reaction

general characteristics of a substance in the liquid state

definite volume, able to flow, not easily compressed

what is iron in the chemical reaction of iron plus oxygen ^{→iron oxide}

iron is a reactant

chemical symbol for sodium

Na

a basket ball has more Mass than a gold ball because

the basketball contains more matter

gas is a form of matter that

takes the shape and volume of its container

homogeneous mixtures are known as

solutions

compound is a what

substance

what are the physical properties of a substance

color, odor, melting and boiling points, and malleability

what happens when iron and oxygen combine to form iron oxide

a chemical change occurs

during chemical and physical changes, substances can absorb or give off what

energy

during what a liquid is boiled to produce a vapor that is then condensed again to a liquid

distillation

mixtures different from substances because of the composition of a mixture can

vary

what change takes place when iron and sulfur combine to form iron sulfide

chemical

what property is a quality of a substance that can be observed or measured without changing the composition of the substance

physical

elements combine chemically to form what

compounds

Fe is the chemical symbol for what element

Iron

what mixture has a uniform composition throughout

homogenous

mass is what in a physical or chemical change

conserved

in a chemical reaction, the new substances that are formed are called what

products