Foundations of College Chemistry - Test 1 (chapters 1-3)

33 terms by aliciafeliz

Create a new folder

Advertisement Upgrade to remove ads

science

observation and study of physical creation

chemistry

study of matter

scientific method

procedure for disproving false (physical) ideas

significant figure

digit in a number that conveys real information about the measurement being made

scientific notation

expressing numbers as power of 10

standard form

scientific notation in which the decimal portion has one non-zero digit to the left of the decimal point

conversion factor

quantity that changes the units of a measurement without changing the value of the measurement

unit equivalence

defined or calculated relationship between two units (e.g. 60 minutes = 1 hour)

density

mass per unit volume, or d = m/v

pure substance

matter with the same kind of atoms or molecules throughout

pure element

matter with only one kind of atom throughout

pure compound

matter with only one kind of molecule throughout

mixture

matter with different atoms or molecules throughout

homogenous mixture

mixture with two or more kinds of atoms or molecules, evenly mixed; a solution

heterogenous mixture

mixture with two or more kinds of atoms and/or molecules unevenly mixed

matter

anything that has mass and occupies space; also called a substance

state of matter

solid, liquid or gas; also called a "phase"; also know as phases of matter

element

substance that cannot be decomposed by any physical or chemical process

metals

solids that conduct electricity (mercury is the only exception - liquid)

non-metals

solids or gases that do not conduct electricity (bromine is the only exception - liquid)

metalloids

solids that sometimes conduct current, sometimes do not; also called semiconductors or semimetals

atoms

smallest particles with properties of an element

compound

substance made of two or more atoms chemically combined

molecule

smallest particle with the properties of a compound

diatomic molecules

molecules made of two of the same kind of atom; also called diatomic elements

chemical forumla

show the kind(s) and proportions of atoms in a molecule

allotrope

different molecular forms of an element

ionic formulas

formula which a has a positive atom/group and a negative atom/group

ion

charged atom or group (positive or negative)

polyatomic group

charged group of atoms (not a molecule)

cation

positive ion

anion

negative ion

neutral

no charge; the condition of an unreacted atom, or an atom existing as a diatomic element

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