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Biology, 31.08.2021 07:40 elishane864
I need help with this science test im in 8th grade not high school btw
Question 1 Which two groups of elements in the periodic table are the most reactive?
A halogens and noble gases
B alkaline earth metals and halogens
C alkali metals and halogens
D noble gases and alkali metals
Number 2 Which statement about nitrogen (N) and phosphorus (P) is correct?
A They have the same number of electron shells.
B They have the same number of valence electrons.
C They are both inert.
D They are both classified as halogens.
number 3 Which property do transition metals have in common?
A They are usually very soft.
B They usually have low densities.
C They usually have high melting points.
D They are usually very reactive.
Question 4 Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share?
A strong odor
B silver color
C low or no reactivity
D metallic texture
Question 5 scientist studies an element that has seven electrons in its outer shell, is fairly toxic, is a gas at room temperature, and is highly reactive. To which group of the periodic table does this element belong?
A 2 - alkaline earth metals
B 17 - halogens
C 1 - alkali metals
D 18 - noble gases
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Answers: 3
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I need help with this science test im in 8th grade not high school btw
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