Why do some metals loose their shine overtime but gold does not?

Water is composed of hydrogen and oxygen, True Or False

Elements in group 15 through 17, do they do they lend AND borrow electrons?

A (n) ___chemical equation has the same number of atoms of each element on both sides. false balanced imbalanced physical

Which is the highest reactive non metal A. Oxygen B. Nitrogen C. phosphorus D. Sodium

Biological diversity includes a habitat all of the different species living in the world only the species with genetic variation only species that asexually reproduce

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these

What is the mass of a box of nails

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy