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33 terms

Unit one vocab - Chemistry

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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.