Explanation:
A particular kind of matter with uniform properties..
Answer:
Air is a mixture.
Explanation:
Air is a homogeneous mixture. It is made up of gaseous substances such as nitrogen, oxygen, and smaller amounts of others.
Carbon dioxide is a pure substance, not a mixture.
Carbon is another pure substance, it cannot be separated into other substances.
Oxygen is just oxygen, it does not contain any other substance.
If Calcium lost two electrons, it would have the same number of electrons as Argon which has 18 electrons.
Answer:
Element Chart
Explanation:
It is a chart that provides many different elements.
According to my examination I have confirmed that I do NOT repeat do NOT know this .
