Answer:
It is a pure substance. Magnesium is an element.
Answer:
Water
Explanation:
When water freezes it forms a crystal lattice shape
Answer:
C. 3-
Explanation:
Protons have an individual charge of 1+, neutrons have no individual charge, and electrons have an individual charge of 1-.
So the total charge from protons is 7+ and electrons 10-, which gives a net charge of 3-.
