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kirill115 [55]
3 years ago
8

A hypothesis is based on the analysis of data collected in a controlled

Chemistry
2 answers:
kiruha [24]3 years ago
6 0
True? I really don’t know but ones someone
Inga [223]3 years ago
6 0
The answer is false because a hypothesis is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
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Uncertainty of the data  hope its help you

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How do I do question number 2?
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Helpppppppppppppp please
Mama L [17]
1)
-Lithium: Lithium got 3 protons, so it atomic number is 3. It is located on the first column of the periodic table, and belonging to the alkali metal. So lithium is a metal. Lithium is highly reactive.
-Neon: It is located on the 18th column of the periodic table, and belong to the noble gases. So Neon is a nonmetal. Neon's reactivity is very low.
-Fluorine: Located on the 17th column of the periodic metal, fluorine is a nonmetal, and belong to the halogen family. Fluorine's reactivity is high.

2)
-Vertical columns of the periodic table are called columns. There is 18 column in the periodic table, and each one represent a chemical family.
-Horizontal rows of the periodic table care called periods. There is 7 periods in the periodic table.
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-The elements in group 1 are the most reactive metals. This group is called the Alkali metals. They only have 1 electron in their outer shell which makes them always ready to lose an electron in an ionic bonding.
-The elements in group 17 are the most reactive nonmetals. This group is called the Halogens, with 7 electrons in their outer shell which makes them always ready to win an electron in an ionic bonding.
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Hope this Helps! :)

4 0
3 years ago
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mash [69]

Answer:

B. abiotic

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in biology and ecology, abiotic components or abiotic factors are non living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.

5 0
2 years ago
26. Which waves have wavelengths longer than those of visible light? Give an example of how each kind
Kipish [7]

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Explanation:

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