What are the two driving forces behind chemical reactions?

Which best describes how an ionic bond forms? A. Two molecules share an electron. B. One atom pulls an electron from another atom. C. Two atoms share valence electrons. D. Two atoms both lose an electron.

A mineral consisted of 29.4% calcium, 23.5% sulfur and 47.1% oxygen. What is the empirical formula?

What role does the salt bridge play in a voltaic cell? It allows electrons to flow from the anode to the cathode. It allows migration of ions from one half-cell to the other. It contains the electrodes. It creates the oxidation reaction.

Which of the following occupies a volume? solids liquids gases all of the above

How do scientsts determine is a newly found thing is dead or alive.

In which era did the first fish appear? a. Carboniferous b. Paleozoic C. Mesozoic d. Permian

How are electrons excited and what happens when the electrons relax

What is the molarity of a solution that is made by dissolving 3.68 g of sucrose (c12h22o11) in sufficient water to form 275.0 ml of solution?

A straight line on a speed-time graph means the speed is constant. this means the speed is not changing over time. how is this different from a distance from a distance-time graph?

Why is it important for an art conservation scientists to study the properties of a painting before it is repaired