Which of the following is a strong base?

A. NH3 (ammonia)

B. H20 (water)

C. CaCO3 (calcium carbonate)

D. NaOH (sodium hydroxide)

What reactants form a combustion reaction? O A. A hydrocarbon and oxygen O B. Hydrogen and water vapor O C. A hydrocarbon and water O D. Water vapor and oxygen

Compounds that are ductile and excellent conductors of electricity have a. isotopic bonds. b. covalent bonds. c. ionic bonds. d. metallic bonds.

True or False, the number of bondingvpairs in a molecule is equal to the number of electrons.

A polar bond results when two atoms have a significant difference in

Is table salt (pure) an element compound or mixture

why are plasmas of great interest to scientists or manufacturers. descride 2 current uses of plasmas and describe 1 way scientists and engineers hope to use plasmas in the future

All of the following are properties of bases except A. Bitter taste B. Produces hydroxide ions in water C. Produces hydronium ions in water D. Slippery to the touch

Sound travels through a medium. Does sound travel in space? Explain why or why not:

Which issue poses the greatest long-term challenge in the development of new nuclear power plants? [A] controlling carbon dioxide emissions [B] storage of radioactive waste [C] controlling fission reactions [D] mining of uranium

In which species does nitrogen have the highest oxidation number? Select one: a. NH3 b. N2 c. NaNO3 d. NO2- e. HNO2