Cambridge Secondary (7-9). Stage 8. Science. Learner's Book - Unit 5: Materials and cycles on Earth - Question 15

Answer the three questions on your own and then check with a partner. Be ready to share your answers with the class.

Of the items in question 2, which are elements, mixtures and compounds?
sodium chloride; oxygen; sea water; gold; orange juice; copper oxide; silver nitrate; soil; black ink; potassium.