Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Physical Science


substance that cannot be chemically broken down into simpler substances


substance made up of two or more elements that are chemically combined


two or more substances that have been physically combined


any element or compound


smallest part of any substance that has all the properties of that substance

chemical bond

force of attraction that holds atoms together

valance electron

electron in the outermost energy level of an atom


atom with an electrical charge

ionic bond

bond formed between atoms that have gained or lost electrons

covalent bonds

bond formed when atoms share electrons

organic compound

compound containing carbon

organic chemistry

study of organic compounds

structural formula

molecular model that uses straight lines to indicate bonds


large molecules that are formed by many smaller molecules


sugars and starches


fats and oils


compounds used to build and repair body tissues

amino acids

building blocks of proteins

nucleic acids

compounds made up of carbon, oxygen, hydrogen, nitrogen, and phosphorus

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 and try again


Reload the page to try again!


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

Voice Recording