Chapter 18: Classification of Matter

Chlorine Gas

________ and sodium metal combine dramatically in the ratio of one to one to form sodium chloride.

Particle

A(n) ________ consisting of two or more atoms that are bonded together is called a molecule.

Suspension

________: a heterogeneous mixture containing a liquid in which visible particles settle.

Iron

________ is a substance that can change states if it absorbs or releases enough energy; at high temperatures, it melts.

Solution

________: a homogeneous mixture of particles so small that they can not be seen with a microscope and will never settle to the bottom of their container.

Distillation

________ can easily separate liquids from solids dissolved in them.

Colloid

________: a type of mixture with particles that are larger than those in solutions but not heavy enough to settle out.

Compound

________: a pure substance in which the atoms of two or more elements are combined in a fixed proportion.

Liquid

The ________ is heated until it vaporizes and moves up the column.

Substance

________: type of matter with a fixed composition.

Physical Properties

The abilities to stretch and bend are ________.

Chemical Property

________: a characteristic of a substance that indicates whether it can undergo a certain chemical change.

Element

________: If all the atoms in a substance have the same identity.

Molecule

A(n) ________ is a basic unit of a molecular compound.

Homogeneous Mixture

________: contains two or more gaseous, liquid, or solid substances blended evenly throughout.

Distillation

________: The process used for separating substances in a mixture by evaporating a liquid and recondensing its vapor.

Physical Property

________: Any characteristic of a material that you can observe without changing the identity of the sub- stances that make up the material.

Chemical Property

The tendency of a substance to burn, or its flammability, is an example of a(n) ________.

Physical Change

________: A change in size, shape, or state of matter.

Substance

type of matter with a fixed composition

Element

If all the atoms in a substance have the same identity

Compound

a pure substance in which the atoms of two or more elements are combined in a fixed proportion

Heterogenous Mixture

A mixture in which different materials can be distinguished easily

Homogeneous Mixture

contains two or more gaseous, liquid, or solid substances blended evenly throughout

Solution

a homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container

Colloid

a type of mixture with particles that are larger than those in solutions but not heavy enough to settle out

Tyndall Effect

The scattering of light by colloidal particles

Suspension

a heterogeneous mixture containing a liquid in which visible particles settle

Physical Change

A change in size, shape, or state of matter

Distillation

The process used for separating substances in a mixture by evaporating a liquid and recondensing its vapor

Chemical Property

a characteristic of a substance that indicates whether it can undergo a certain chemical change

Chemical Change

A change of one substance to another

Law of Conservation of Mass

the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change

Heterogenous Mixture

A mixture in which different materials can be distinguished easily

Tyndall Effect

The scattering of light by colloidal particles

Chemical Change

A change of one substance to another

Law of Conservation of Mass

the mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change.