Answer:
drought
Explanation:
droughts are long periods without water
A.) Hydroxide ion is the negative ion found in bases.
C.) Color change occurs during neutralization reaction.
Hope this helps!
Answer;
-Not that reactive
The element found is not very reactive.
Explanation;
-If an element is found in nature in its pure elemental state then the the element found is not very reactive.
-There are many elements which are not much reactive. such as in metals- Ag, Au, Hg, Cu etc. and in Non metals- O2, N2, Inert gases etc.
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For checking its chemical properties you will have to examine it with O2 or C-12.
The mass of hydrogen gas is 1.00794 u ± 0.00001 u. I hope this helps you out!!