15. Metallic bonds form between?
Answer 15 : cations and electrons.
16. What is the formula for lithium nitride?
Answer 16 : Li₃N
17. Which type of solid is likely to be the best conductor of electricity?
Answer 18 : metal element.
18. When an atom gains an electron, it forms a?
Answer 18 : an anion.
19. Mg₃P₂ - Which element is the cation?
Answer 19 : Mg⁺⁺
20. Which of the following has the highest melting point?
Answer 20 : metallic compound.
21. What statement is true about carbon-12 and carbon-14?
Answer 21 : They are isotopes of carbon.
22. What is the name of the phase change that occurs when a substance changes from a gas to a liquid?
Answer 22 : Condensation
Hope this helps!
[tex]\textit{\textbf{Spymore}}[/tex]
