a pure substance that cannot be broken down into a simpler substance
combination of two or more elements that have been chemically combined
combination of two or more elements or compounds that can be physically separated
a capital letter used to represent elements
any single type of material
shows two or more elements that are chemically combined
anything that has mass and takes up space
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above 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.
Your microphone is muted
For help fixing this issue, see this FAQ.
NEW! Voice Recording
Click the mic to start.