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Alloy

A solid solution containing different metals, and sometimes nonmetallic substances.

Analysis

To break down

Aqueous solution

A solution in which the solvent is water.

Chemical change

The change of one or more substances into other substances.

Chemical property

The property that can be observed only when there is a change in the composition of a substance.

Chemical reaction

Another word for chemical change

Chemistry

The science that investigates and explains the structure and properties of matter.

Chromatography

Method of separating solution by campulary action

Compound

A chemical combination of two more different elements joined together in a fixed proportion.

Density

The amount of matter (mass) is a given unit volume.

Element

A substance that cannot be broken down into simpler substances.

Endothermic

Chemical reaction that absorbs energy.

Energy

The capacity to do work.

Exothermic

Chemical reaction that gives off energy.

Formula

A combination of chemical symbols that show what elements make up a compound and the number of atoms of each element.

Law of conservation of mass

In a chemical change, matter is neither created nor destroyed.

Macroscopic

Level of matter -based on behavior and observed composition of matter detected with the senses.

Mass

The measure of the amount of matter an object contains.

Matter

Anything that takes up space and has mass.

Mixture

A combination of two or more substances in which the basic identify of each substance is not changed.

Physical chance

A change in matter where its identity does not change.

Physical property

A characteristic of matter that is exhibited without a change of identity

Property

The characteristics of matter; how it behaves.

Qualitative

An observation made without measurement

Quantitative

An observation made with measurement

Scientific model

A thinking device, built on exterminations, that helps us understand and explain macroscopic observations.

Solute

The substance that is being dissolved when making a solution

Solution

A mixture that is the same throughout, or homogeneous.

Solvent

The substance that dissolves the solute when making a solution.

Submicroscopic

Level of matter - used to determine how the hidden structure of matter influences its behavior, too small to be seen with a regular microscope. Requires an electron microscope

Substance

Matter with the same fixed composition and properties.

Synthesis

The name applied to a reaction in which two or more substances combine to form a single product.

Volatile

Description of a substance that easily changes to a gas at room temperature.

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