Answer:
Argon (Ar)
Explanation:
I took the chapter test, and it was the right answeerrrrr
It’s a subjective answer but glass is believed to be the most safe material to use for tea kettles
A hypothesis is a tentative explanation that is put forward for an observation.
<h3>What is a hypothesis?</h3>
A hypothesis is a tentative explanation that is put forward for an observation. In this case, we have to determine whether the location or the kind of breed affects the color of the flowers.
To test the hypothesis, various shades of colors of the flower may be planted on different locations and the growth of each of the shades monitored to ascertain whether the color depends on the location or solely on the kind of breed.
Learn more about hypothesis:brainly.com/question/17173491?
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Its D because
Li = 6
Be =9
C= 12
O=15
Answer:
The answer will be ：
In year 1869
Russian scientist named Dmitri Mendeleev
Chart called Mendeeleves periodic table
increasing atomic masses
physical and chemical properties.
Hope this Helps
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