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Elements
Page 8
Questions (1,501)
What class of elements includes all of the elements that are gases at room temperature?
metalloids metals nonmetals
2 answers
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51 views
Which class of elements is most effective at conducting electricity and heat?
metalloids nonmetals metals
2 answers
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50 views
Element X is a poor conductor of heat, has a low boiling point, and is a brittle solid at room temperature. Where on the
2 answers
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Phosphorus bursts into flame when exposed to oxygen. What element might be used when storing pure phosphorus to keep it from
2 answers
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What common characteristic is generally shared by the elements at the center of a period?
They are the least reactive elements.
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What characteristic distinguishes helium (He) from the other noble gases?
Helium has a strong odor. Helium is highly reactive.
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The discovery of what element showed the usefulness of Mendeleev’s periodic table ?
germanium gallium scandium aluminum
2 answers
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What quality differentiates hydrogen (H) from the other elements in group 1, the alkali metals?(1 point)
Responses It has more
2 answers
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blu
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Which element has atoms with valence electrons in a higher energy level than those of calcium (Ca)?
(1 point) Responses lithium
2 answers
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Which compound contains nitrogen?(1 point)
Responses glucose glucose starch starch water water amino acid
23 answers
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JJJJJ
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Which statement about nitrogen (N) and phosphorus (P) is correct?
(1 point) Responses They have the same number of valence
4 answers
asked by
EMILIANO
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Read each description in the first column of the table below if any chemical element with atomic number of 92 or less matches
2 answers
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Read each description in the first column of the table below if any chemical element with atomic number of 92 or less matches
2 answers
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Read each description in the first column of the table below if any chemical element with atomic number of 92 or less matches
2 answers
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Which statement about nitrogen (N) and phosphorus (P) is correct?
(1 point)
7 answers
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Fluorine has 7 valence electrons. Which charge is its ion likely to have?(1 point)
1– 1+ 5- 5+
7 answers
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poop
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Which of the following is not an element?
O gold • water O silver • tin • carbon
2 answers
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Which of the following is not an element?
• gold • silver • water • carbon tin
2 answers
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Which element would have the lowest electronegativity? (1 point)
Responses an element with a small number of valence electrons
2 answers
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An element is highly conductive, highly reactive, soft, and lustrous. The element most likely belongs to which group?(1 point)
Re
7 answers
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anoy
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Which pair of elements has atoms with the same number of valence electrons?
potassium (K) and bromine (Br) potassium (K) and
7 answers
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Which of these is a light element?(1 point)
Responses carbon carbon oxygen oxygen lithium lithium iron
2 answers
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Which of the following substances is an element?(1 point)
Responses salt salt hydrogen hydrogen insulin insulin protein
11 answers
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Water, HO, is an example of a(n)
A)wave B)solid C)electric charge D) chemical E)element
2 answers
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Water, HO, is an example of a(n)
• wave O solid • electric charge • chemical • element
2 answers
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Which element has six valence electrons?
(1 point) Responses carbon (C) oxygen (O) lead (Pb) phosphorus (P)
2 answers
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An element is highly conductive, highly reactive, soft, and lustrous. The element most likely belongs to which group?(1 point)
Re
2 answers
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Why did the K and Pb switch? What don't they instead go together to form a compound?
3 answers
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18 views
Use the periodic table to answer the question.
The elements in the periodic table are arranged in groups (columns numbered Roman
2 answers
asked by
blu
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Which element is a noble gas?
(1 point) Responses hydrogen (H) hydrogen (H) radon (Rn) radon (Rn) rubidium (Rb) rubidium (Rb)
3 answers
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optional
38 views
There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true? (1 point)
2 answers
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Considering the physical properties of all elements, how did your predicted averages compare to the real values?
3 answers
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Pepe found a substance that is shiny and somewhat malleable.
Metal Nonmetal Metalloid
3 answers
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Barbara found an element that is a gas and does not conduct heat or electricity.
Metalloid Nonmetal Metal
3 answers
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An atom of element X has one more shell of electrons than an atom of beryllium, but it has one less valence electron than
2 answers
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74 views
Which element is most likely to allow electricity to pass through it?
copper carbon helium sulfur
2 answers
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31 views
Water, H2O, is an example of a(n)
O electric charge O element O chemical O wave O solid
2 answers
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24 views
An element is highly conductive, highly reactive, soft, and lustrous. The element most likely belongs to which group?(1 point)
Re
10 answers
asked by
Saul Goodman
247 views
Which element matches this Groups characteristics and properties?
Is solid and dense at room temperature Is shiny Has atoms with
2 answers
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89 views
what is the color of potassium when it burns in air
1 answer
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70 views
what is the product of zinc and oxygen
1 answer
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what is the color of zinc when it burns in air what is the color of zinc when it burns in oxygen
1 answer
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80 views
what is the color of the product copper
1 answer
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true or false
Metallic elements are best for conduction.
1 answer
asked by
Rondezy
70 views
Fill in the blank’s
2 other elements in the same period as Nitrogen (N) are _______, and ________. 2 other elements in the same
3 answers
asked anonymously
28 views
Do transition metals have low densities
1 answer
asked by
Joe
63 views
Does nitrogen and phosphorus inert
1 answer
asked by
Joe
54 views
Is nitrogen and phosphorus classified as halogens
1 answer
asked by
Joe
67 views
Which of the following are a part of pretrial proceedings? Select all that apply.
A. presentation of the case B. probation C.
1 answer
asked by
jpxfrd
64 views
Which of the statements about elements is true?
• The atoms of all elements have different masses and different volume.
3 answers
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43 views
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