SVMSscience - Chem Unit 1

34 terms by pwerner 

Create a new folder

Advertisement Upgrade to remove ads

Solid

Has a definite shape and definite volume, particles in a fixed position

Liquid

Has an indefinite shape and definite volume, particles slide past one another

Gas

Has an indefinite shape and an indefinite volume, particles spread apart

3 States of Matter

Solid, Liquid, and Gas

Mixtures

Two or more substances that are mixed together, but not chemically combined

Solutions

Best Mixture

Pure Substance

Only one kind of matter

Atom

The smallest particle of an element with the properties of that element

Element

A substance in which all atoms are alike, which cannot be chemically or physically separated

Compounds

Made of two or more elements that are chemically combined

Chemical Bond

The force that holds atoms together

Physical Change

A change that alters the form or appearance of a substance, but does not make the materials in to another substance

Chemical Change

A change that creates a new substance

Melting

Change from solid to liquid, heat/energy added

Boiling

Vaporization that occurs on and below the surface of a liquid, heat/energy added

Vaporization

Liquid to gas, heat/energy added

Sublimation

Change from Solid to Gas, heat/energy added

Freezing

Change from liquid to solid, heat/energy taken away

Condensation

Change from gas to liquid, heat/energy taken away

Characteristic Properties

A quality of a substance that never changes and can be used to identify the substance

Chemical Formula

A combination of symbols that represent the elements in a compound

5 Signs of a Chemical Reaction

Change of color, change in temperature, precipitation, production of gas, change in properties (odor, light)

Crystalline Solid

A substance made of crystals in which the particles are arranged in regular repeating patterns

Amorphous Solid

A solid made up of particles that are not arranged in a regular pattern

Viscosity

The resistance of a liquid to flowing

Temperature

The measure of the average energy of the motion of particles in a substance

Pressure

Force exerted on a surface, divided by the total area over which the force is exerted.

Evaporation

Vaporization that occurs at the surface of a liquid

Molecule

Particle consisting of two or more atoms

Atoms

Building blocks of all matter, smallest particle of an element that still retains properties of that element

Parts of an Atom

Protons, Neutrons, Electrons

Protons

Particles with a positive charge

Neutrons

Particles with no charge

Electrons

Particles with a negative charge

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set