Answer: physical
Explanation: freezing and melting are physical changes.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Answer:
the centromere, the arm and the telomere
Explanation:
Answer:
KNO2, KBr
Explanation:
Chemical compounds are any substance composed of identical molecules consisting of atoms of two or more chemical elements. So NO2 and KBr are compounds, Br2 and Fe are not.
