Why are elements called building blocks

For which of the following processes would there be a decrease in entropy

Give the actual ground-state electron configuration for copper (Cu) using the complete form. Express the electron configuration using superscripts where appropriate. For example, the configuration for Li would be entered as 1s^22s^1.

Carbon dioxide dissolves in water more easily than it does in warm water. What will happen to a carbonated beverage if it is heated up

Carbon and silicon are tetravalent but ge sn pb show di valency. Why

1. Energy is expended when a force moves matter across a distance. True/False 2. The conservation of mass-energy and the first law of thermodynamics are synonymous. True/False 3. Temperature and thermal energy are synonymous terms. True/False 4.

a 1kg rock is at a height of 100 meters. What is the rocks gravitational potential energy at 100 meters high

Why doesn't the stomach acid just digest right through the wall of the stomach? Select one: a. Neutralizers are imbedded in the stomach lining. b. The lining of the stomach is protected by mucus. c.

If a substance cannot be seperated physically or chemically, it is?

Match each type of sedimentary rock with its composition. 1. mineral crystals clastic sedimentary rock 2. remains of dead creatures organic sedimentary rock 3. weathered rock particles chemical sedimentary rock

A scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result support the theory of plate tectonics? Why or why not?