Checkpoint: metalloids, minerals, the acid test and matter
Four questions on the last four ideas. Feedback comes as you answer, and you can retry any time.
Silicon is a metalloid. Which of its test results matches copper?
What are most rocks made of?
Iron meets dilute hydrochloric acid. What do they make?
A balance shows that a thing has mass. What else must be true for it to be matter?
0 of 4 answered