Some polymers are elastic because they are made of

a. carbon.

c. sugar and alcohol.

b. phosphate ladders.

d. cross-linked chains.

How can you detect that a chemical reaction has occurred? Select all that apply. A precipitate has formed. A color change has occurred. A gas has formed. A phase change has occurred. A temperature change occurred.

A manufacturer claims its cleanser work twice as fast as any other. could testt be performed to support the claim?

During an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles of another gas under the same conditions. What is the molar mass of the unknown gas? (Note: the molar mass of oxygen gas is 32.

Which of the following best completes the phases? for every action there is

What element has the same valence electrons as carbon A) N B) AI C) Si or D) Be

Which best describes the two ways that energy is measured A. In convection and in temperature B. In temperature and in radiation C. In radiation and in convection D. In wavelength and in temperature

What usually happens to the outer electrons of metallic atoms when they combine chemically with nonmetallic atoms?

How many moles of ca atoms are in 534.0 g ca?

Select all that apply. reactions between atoms occur when: an atom seeks to fill its outer shell of electrons an atom seeks to balance its positive and negative charges the reaction will result in paired electrons

Have scientists found any reliable predictors for earthquakes, like radon gas release or weird animal behavior?