Rows in the periodic table are called periods...on the other hand, columns are called groups.
Answer:
Ionic solids
Explanation: Ionic solids—Made up of positive and negative ions and held together by electrostatic attractions. They're characterized by very high melting points and brittleness and are poor conductors in the solid state. An example of an ionic solid is table salt, NaCl.
D) Helium (He) is the second most abundant element in the universe, the first one being hydrogen, and helium is followed by: oxygen, carbon, neon, iron, nitrogen, silicon, magnesium, and sulfur.
Answer:
Mineral
Explanation:
Many minerals share the same colors so it would be one of the least important parts of mineral identification
Answer:
Energy flows from primary producers to consumers, in one direction only
Explanation:
