Metalloids Study guides, Class notes & Summaries
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NLN Practice Exam Questions And Answers (Verified And Updated)
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NLN Practice Exam Questions And Answers 
(Verified And Updated) 
1 kilogram (kg) of solid X at 10°C and 1 kg of solid Y at 10°C each absorb 5 joules of heat 
energy. The final temperatures of X and Y are 15°C and 20°C, respectively. Compared to X, Y 
must have a lower 
specific heat. 
conductive heat. 
heat of fusion. 
heat of vaporization. - answerspecific heat. 
A drop of dilute ammonium hydroxide (NH4OH) is placed on one side of a slide containing a 
large number of swimming paramecium. U...
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AQA A-Level Chemistry – Periodicity Questions & Correct Answers/ Graded A+
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s block 
: The block that belongs to hydrogen and groups 1 and 2 
Elements that have their highest energy e- in s-orbitals 
E.G. Na 1s1 2s2 2p6 3s1 
p 
: The block that belongs to the non-metals and metalloids 
Elements that have their highest energy e- in p-orbitals 
E.G. C 1s1 2s2 2p2 
d 
: Transition metals and b-block are not exactly the same (Scandium and Zinc are not 
transition metals) 
Elements that have their highest energy e- in d-orbitals 
1s1 2s2 2p6 3s2 3p6 4s2 3d6 
2 
f 
: The blo...
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ATI TEAS 7 Test Chemistry - Chemical Bonds & Solutions (Answered)
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ATI TEAS 7 Test Chemistry - Chemical Bonds & Solutions (Answered) 
 
 
valence electrons 
The number of valence electrons in an atom is the most important factor in determining how an element will react. Valence electrons, which are found in an atom’s outermost energy level, are involved in forming chemical bonds. 
octet rule 
The octet rule states that atoms will lose, gain, or share electrons to obtain a stable electron configuration of eight valence electrons. In other words, if an atom nee...
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Week 13 chem 1011 Questions With Complete Solutions
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Representative Elements correct answer: Groups 1, 2, 13-18 
The outer e- belongs to 's' or 'p' groups 
 
Metals correct answer: Elements that readily lose electrons (form cation), giving them a high heat and electrical conductivity levels, high luster and variety of hardness 
 
Nonmetals correct answer: Readily gain e-, do not generally conduct heat/electricity 
Usually liquids and gases, some soft solids 
 
Metalloids correct answer: Elements that may accept or donate electrons readily ...
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CHEM 104 EXAM #2|Questions with 100% Correct Answers
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CHEM 104 EXAM #2|Questions with 100% Correct Answers 
Periods are 
horizontal rows(1-7) 
groups are 
vertical columns (1A-8A) 
Metals are 
70%, shiny, ductile, heat, electricity 
Non-metals are 
dull, brittle, good insulators 
metalloids are 
better conductors than non-metals, not as good as metals 
3B-12B is 
transition metals 
1A-8A is 
representative elements 
Alternative System 
1-18 
1A 
alkali metals 
2A 
Alkaline Earth Metals 
3A-6A 
no common names 
7A 
Halogens -1 
8A 
Noble Gases 
P+ 
...
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NLN Practice Exam Questions And Answers (Verified And Updated)
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NLN Practice Exam Questions And Answers 
(Verified And Updated) 
1 kilogram (kg) of solid X at 10°C and 1 kg of solid Y at 10°C each absorb 5 joules of heat 
energy. The final temperatures of X and Y are 15°C and 20°C, respectively. Compared to X, Y 
must have a lower 
specific heat. 
conductive heat. 
heat of fusion. 
heat of vaporization. - answerspecific heat. 
A drop of dilute ammonium hydroxide (NH4OH) is placed on one side of a slide containing a 
large number of swimming paramecium. U...
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2024 Chemistry 121 Exam 1 Questions With Correct Answers!!
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Hydroxide - Answer-OHAcetate - Answer-C₂H₃O₂⁻ 
Nitrate - Answer-NO₃⁻ 
nitrite - Answer-NO₂⁻ 
Oxide - Answer-O²⁻ 
Sulfide - Answer-S²⁻ 
Sulfite - Answer-SO₃²⁻ 
Sulfate - Answer-SO₄²⁻ 
Carbonate - Answer-CO₃²⁻ 
Chromate - Answer-CrO₄²⁻ 
Dichromate - Answer-Cr₂O₇²⁻ 
Permanganate - Answer-MnO₄⁻ 
Bicarbonate - Answer-HCO₃⁻ 
Bisulfite - Answer-HSO₃⁻ 
Ammonium - Answer-NH₄⁺Ammonia - Answer-NH₃ 
Hydrochloric Acid - Answer-HCl 
Nitric Aci...
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Chemistry definitions IEB
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Chemistry definitions IEB 
Mixtures - ANS-A combination of two or more pure substances that are not chemically 
bonded together 
homogeneous mixture - ANS-A mixture with uniform composition and the various 
components of the mixture cannot be seen 
heterogeneous mixture - ANS-A mixture that does not have uniform composition and 
the various components of the mixture can be seen 
Pure substances - ANS-Any substance that is not a mixture, including elements and 
compounds 
Elements - ANS-Pure ...
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chem 104 exam 1 practice Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+
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semi conductors are _______ 
A) metalloids. B) halogens C) transition elements. 
D) metals. E) nonmetals. 
: metalloids 
Which of the following is an element and a molecule? 
A) Air B) He C) CO2 D) C E) O3 
: O3 
The ionization energy of chlorine is lower than the ionization energy of ________. 
A) calcium B) sodium C) hydrogen D) fluorine E) lithium 
: fluorine 
Choose the pure substance from the list below. 
A) lemonade B) sea water C) air D) sugar E) coffee 
: sugar 
2 | P a g e 
the recomm...
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Alek’s latest update with complete and verified solutions
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Alek’s latest update with complete and verified solutions 
electron (symbol, charge, mass, location) e-, -1, .000549 amu or 1/1800 amu, orbiting around nucleus 
proton (symbol, charge, mass, location) p+, +1, 1.0 amu, nucleus 
Neutron (symbol, charge, mass) N0, 0, 1.0 amu 
ecide which element probably has a density most and least similar to the density of rubidium. options are fluorine, cesium, thallium, & indium. Metals are more similar to each other than they are to nonmetals. Likewise, nonm...
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