1 Electronegativity generally decreases: A Across a period B Down a group C From right to left D With increase in atomic number
2 Emma is studying the periodic table and notices that Group 2 elements have 2 valence electrons. She predicts that they will form ions with a +2 charge. What is the name of Group 2? A Alkali metals B Alkaline earth metals C Halogens D Noble gases
4 Bilal is looking at the periodic table and identifies a horizontal row of elements. He knows that elements in the same horizontal row have the same number of electron shells. What are these horizontal rows called? A Groups B Periods C Blocks D Series
5 Elements in the same group have the same: A Atomic mass B Number of shells C Valence electrons D Atomic size
6 Victor is studying the melting points of metals and non-metals. He notes that most metals have high melting points, while non-metals have lower melting points. Which of the following has a high melting point? A Chlorine B Sulfur C Iron D Oxygen
7 Which property increases from left to right in a period? A Atomic radius B Metallic character C Ionization energy D Shielding effect
8 Ming is studying the density of elements in Group 1. He notes that lithium floats on water, while sodium also floats. As we move down the group, the density of alkali metals generally: A Decreases B Increases C Stays the same D First decreases then increases
9 Which periodic trend explains reactivity of metals? A Atomic radius B Ionization energy C Electronegativity D Electron affinity
10 Why noble gases are chemically inert? A High atomic mass B Incomplete valence shell C Complete valence shell D Low electronegativity
11 Atomic radius generally increases down a group due to: A Increase in nuclear charge B Increase in valence electrons C Addition of new shells D Decrease in atomic mass
12 Hina is studying the ionization energy of elements. She compares sodium (Na) and magnesium (Mg). Which element has the higher ionization energy? A Sodium B Magnesium C Both have the same D Cannot be determined
14 George is comparing the atomic size of chlorine and iodine. He knows that iodine is below chlorine in Group 17. Which element has the larger atomic size? A Chlorine B Iodine C Both have the same atomic size D Cannot be determined
16 Khalid is comparing the metallic character of elements. He knows that metallic character decreases across a period. Which element in the third period is the most metallic? A Silicon B Sodium C Chlorine D Magnesium
18 What is the modern periodic law? A Properties of elements depend on atomic mass B Properties of elements are periodic functions of atomic number C Elements are arranged by density D Elements are arranged by valency
19 Metalloids have properties that are: A Only metallic B Only non-metallic C Both metallic and non-metallic D Neither metallic nor non-metallic
20 Rachel is studying the adaptability of metals. She knows that metals can be hammered into sheets (malleability) and drawn into wires (ductility). Which of the following is a property of metals? A Brittle B Malleable C Poor conductor of heat D Low melting point
21 Waseem is learning about the position of an unknown element in the periodic table. He predicts that an element with atomic number 19 will be in which period and group? A Period 3, Group 1 B Period 4, Group 1 C Period 4, Group 2 D Period 3, Group 2
22 Which block elements are also called representative elements? A d-block B f-block C s and p-block D Only p-block
23 Chloe is studying the reactivity of halogens. She performs a displacement reaction and observes that chlorine displaces bromine from sodium bromide. Which statement is true about this reaction? A Chlorine is less reactive than bromine B Bromine is more reactive than chlorine C Chlorine is more reactive than bromine D Both have the same reactivity
24 Which elements are good conductors of electricity? A Non-metals B Metalloids C Metals D Noble gases
25 Julia is studying the electronegativity of elements. She compares chlorine and bromine. Which element is more electronegative? A Chlorine B Bromine C Both have the same electronegativity D Cannot be determined
26 Uma is comparing the thermal conductivity of metals and non-metals. She knows that metals are good conductors of heat. Which of the following is a non-metal with good thermal conductivity? A Graphite B Sulfur C Oxygen D Neon
27 The periodic table is arranged in order of increasing: A Atomic mass B Atomic number C Density D Valency
28 Quinn is studying the electrical conductivity of metals. He knows that metals are good conductors of electricity. Which of the following is the best conductor of electricity among metals? A Silver B Copper C Gold D Aluminum