Answer:
D. a scientific explanation that is agreed on by all scientists and is no longer adjusted as new evidence is found
Explanation:
Scientific theory is an explanation that has been repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results
The first one is exothermic because energy is a reactant, the second formula is endothermic
Polar Covalent.
This is because both Calcium (Ca) and Carbon (C) are non metals, thus eliminating the ionic option.
It is polar covalent rather than nonpolar covalent due to the fact that the electrons in a polar covalent bond are shared unequally while those in a nonpolar bond are shared equally.
This can be determined by looking at the amount of valence electrons; if the electrons cancel each other out, it is shared equally. If not, it is shared unequally.
Hope this helps!
Answer:
Kilo is a prefix
Explanation:
Prefixes are the beginning of words.
Thus KILOgram is at the beginning.
Suffix is at the END of a word
Unit is the body of the word
