Heat flows from blank substances

A natural disaster caused an ecosystem to experience a significant drop in species richness. What can you conclude about the ecosystem? Evenness changed from high to low. Evenness changed from low to high.

What bond is C5H10O5?

A compound held together by ionic bonds is called a ___?

Which sample of copper has atoms with the lowest average kinetic energy? 1. 10. g at 45°C 2. 20. g at 35°C 3. 30. g at 25°C 4. 40. g at 15°C

Doing an experiment about electroplating, you attempt to coat silver in gold using a basic electroplating set-up. You take the mass of the silver before and after the experiment.

When does raising the temperature of a gas increase its pressure? A. temperature B. volume C. number of particles D. pressure

Hexyne. What does the name of this hydrocarbon tell you about its molecular structure?

Which of the following processes includes all of the others? Group of answer choices transport of an ion down its electrochemical gradient osmosis passive transport facilitated diffusion

How is the Bohr atomic model different from the plum-pudding model? A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout. B. In Bohr's model, the atom's mass is mostly made up of electrons instead of protons.

What does the cell theory state? A. that cells come from other cells B. that cells come only from animals C. that cells cannot be created or destroyed