What is a pure substance?
An impure substance can be easily separated into its components.
Which of the following are examples of pure substances? (Select all that apply)
Can you name one example of an impure substance?
Which of the following statements is true?
Which of the following is a compound?
What best describes a mixture?
Which of these is not an element?
Which is an example of an element?
An element cannot be broken down into simpler substances by chemical means.
A compound is made up of two or more elements that are chemically bonded together.
All mixtures are uniform and cannot be separated by physical means.
Pure substances include both elements and compounds but not mixtures.