Neon I think. Go to the periodic table and see which one is the 11th
Answer:
the answer is A
I made a chart for AP chem if you want to refer to it.
Answer:
Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.
Explanation:
Chemical change involves formation of new substances. Therefore, the correct answer is "Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form."