What determines chemical properties and reactions? A. color of a substance B. size of the molecules C. atomic structure and bonds D. physical properties

Which part of a plant works as it "nostrils"?

Do we generally break chemical bonds when we cool molecules?

Which best explains why water is able to "stick" to the side of glass? Strong adhesive forces exist between different water molecules. Strong cohesive forces exist between different water molecules.

Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will be spontaneous at all temperatures. C) This reaction will be nonspontaneous at all temperatures.

What is the effect of the biogeochemical cycles? O O O O cycling energy through a food chain recycling matter through the biosphere recycling rocks through the layers of Earth cycling nutrients through the human body

The elements that contain electrons in an F sublevel near the highest occupied energy level are referred to as? A. Alkali metals B. Alkali earth metals C. transition metals D. inner transmission levels

A 5.91 g unknown sample analyzed by elemental analysis revealed a composition of 37.51 % C. In addition, it was determined that the sample contains 1.4830 * 1023 hydrogen atoms and 1.2966 * 1023 oxygen atoms. What is the empirical formula?

How can we use the mole to convert between the mass and the volume of a substance?

What is the definition of convection a. the process in which energy is released by molecules breaking apart b. the process in which energy is released by molecules breaking apart c. transfer of heat between two objects that are touching d.

Describe how space exploration has changed the economy and culture, and include one specific example.