Anything that has mass and occupies space.
The study of the properties of matter and how matter changes.
A single kind of matter that is pure and has a specific set of properties.
A characteristic of a pure substance that can be observed without changing it into another substance.
A characteristic of a pure substance that describes its ability to change into a different substance.
A pure substance that cannot be broken down into other substances by chemical or physical means.
The basic particle from which all elements are made.
The force that holds two atoms together.
A particle made of two or more atoms bonded together.
A pure substance made of two or more elements chemically combined.
A formula that gives the elements in a compound and the ratio of atoms.
Two or more substances that are mixed together but not chemically combined.
A mixture in which pure substances are unevenly distributed throughout the mixture.
A mixture in which substances are evenly distributed throughout the mixture.
An example of a homogeneous mixture; forms when substances dissolve.
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.