states of matter ppt

ark434/jsb154/srsa/july2009

Matter is anything that has mass and occupies space.

Mass: is an actual measurement of the amount of matter present.


• Physical properties: Properties of matter that can be observed or measured without trying to change the composition of the matter being studied.

• Chemical properties: Properties matter demonstrates when attempts are made to change it into new substances.

• Physical changes: Changes matter undergoes without changing composition.

• Chemical changes: Changes matter undergoes that involves changes in composition.


Some Characteristics of Gases, Liquids and Solids and the Microscopic Explanation for the Behavior

solid liquid gas

retains a fixed volume and shape

rigid - particles locked into place

assumes the shape of the part of the container which it

occupies particles can move/slide past

one another

assumes the shape and volume of its container

particles can move past one another

not easily compressible little free space between

particles

not easily compressible little free space between

particles

compressible lots of free space between

particles

does not flow easily rigid - particles cannot

move/slide past one another

flows easily particles can move/slide past

one another

flows easily particles can move past one

anotherark434/jsb154/srsa/july2009

3 states

of Matte

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Matter can be classified:

Elements are substances that cannot be decomposed by chemical means into simpler substances

Each element is assigned a unique chemical symbolMost are one or two lettersFirst letter is always capitalizedAll remaining letters are lowercaseNames and chemical symbols of the

elements are listed on the inside front cover of the book

Compounds are substances formed from two or more different elements combined in a fixed proportion by mass

The physical and chemical properties of a compound are, in general, different than the physical and chemical properties of the elements of which it is comprised

Elements and compounds are examples of pure substances whose composition is the same, regardless of source

A mixture consists of varying amounts of two or more elements or compoundsHomogeneous mixtures or solutions

have the same properties throughout the sample

Heterogeneous mixtures consist of two or more phases

states of matter ppt

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