Question

Fill in the blanks. 1. a pure substance is a_______substance.
2.tritium has_____neutrons In its necules.
3.Fe+2 is an______ ion
4._____is used to study diseases circulatory system in human body.
5.Radioactive elements give____radition
6.Quick lime + water becomes hot and is an______reaction.
7. by liquefying______we can separate oxygen and nitrogen gases.
8.Ice changes into water at______.
9.Brass is an________.​

Answer 1

Answer:

1)single

2)many

3)

4)

5)

6)

7)

8)25 degree

9)