Question

which 3 of these substances are elements?
1) copper 2)glass 3)lime 4)calcium 5)bronze 6)sand 7)gold 8)paper

Answer 1

Answer:

gold, copper, calcium

Explanation:

these 3 are the only elements.

glass is a mixture

lime is a compound

bronze is an alloy

sand is a mixture

and there is no chemical symbol for paper

Answer 2

Answer:

1,4,7

Explanation:

cu is element. glass is SiO. lime is CaO. Calcium is Ca. Bronze is alloy of Cu and Sn. Sand is SiO. Gold is Au. Paer is Cellulose