Predator-prey relationships are shown through food trees. food chains. food webs. food networks.

Which of the following measurements of different masses is most precise? A. 6.2000 g B. 6.000000 g C. 6.24400 g D. 6.24444 g

What do scientists use to describe chemical reactions? a. laws and theories b. synthesis c. the conservation of matter d. chemical equations

Identify the limiting reactant in the reaction of bromine and chlorine to form BrCl, if 29.7 g of Br2 and 11.2 g of Cl2 are combined. Determine the amount (in grams) of excess reactant that remains after the reaction is complete.

Many trials are not needed before a hypothesis can be accepted

A piece of ice melts and reacts with Calcium metal to produce calcium hydroxide and hydrogen gas. Identify the type of change/s taking place in the given example. A. physical change only. B. chemical change only. C.

A substance that permits the flow of electrons is a (n a. conductor b. insulator

If 1/8 of an original sample of krypton-74 remains unchanged after 34.5 minutes, what is the half life of krypton-74?

If a measurement is recorded as 1.2 cm what's the smallest marking on the instrument

Why do the ions in an ionic bond stay together, aka form the bond?

Is it ever possible to extract 100% of a compound from a solution? Why or why not?