Metalloids Study guides, Class notes & Summaries

Atom the basic building block of matter that make up everyday objects Nucleus (atom) the center of an atom that contains the protons and neutrons Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:02 / 0:15 Full screen Electron Cloud the area around the nucleus of an atom where electrons are found Protons positive charged subatomic particles found in the nucleus Neutrons neutral charged subatomic particles fou...

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 ...

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...

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+ ...

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...

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...

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...

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...

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...

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 ...