Answer:
4 is b, 9 is c, 10 is b, 11 is a, 17 is c, 18 is a
Explanation:
I did fossils in science Olympiad
Answer:
Frequency, Wavelength, Crest, amplitude, trough, sound waves, all of the above
Explanation:
<span>A compound is a combination of elements chemically combined. Briefly explain why a beaker containing sand and water is a mixture although sand itself is a pure substance. Because it's a combination of two or more substances. ... Briefly explain why a compound has <span>characteristic properties</span></span>
The cations has positive charges that are metals while the anions have negative charges that are non-metals. Upon reaction, there is an exchange in charges that are reflected in the subscripts of the atoms. In this case, compound AX2 must have a cation, A belonging to group 2 A with +2 charge and anion, X belonging to Group 7A with -1 charge. Answer is D.