Answer:
It is pure substance
Explanation:
Aerated water is a homogeneous mixture of carbon dioxide and water. It is not a pure substance. Carbon dioxide is a compound while oxygen and zinc are elements which are a type of pure substance.
Answer:
0
Explanation:
standard hydrogen is considered to be protium isotope of hydrogen that has one electron revolving around the nucleus containing one proton and no neutrons.
it's atomic number and mass number is 1
and number of neutrons = mass no. - atomic no.
= 1 - 1
=0
Answer: 1 atom
Explanation:
The loss of the remaining valence electron results in an ion with a +2 charge. The proper way of noting the charges on these ions is to use the systematic name for each ion, nickel (I) for the +1 ion and nickel (II) for the +2 ion.
Answer:
D
Explanation:
Process of elimination. There is more than just water vapor in a vape so it can't be D, it isn't a cigarette so it can't be B, and A is just clearly not the answer haha.
<span>the study of matter and the changes that matter undergoes</span>
