1 Ahmed is comparing the boiling points of metals and non-metals. He knows that metals generally have high boiling points. Which of the following is a non-metal with a very low boiling point? A Carbon B Sulfur C Oxygen D Iron
3 Patricia is studying the lanthanides and actinides. She knows these are inner transition elements. Where are they placed in the periodic table? A In the main body of the periodic table B At the top of the periodic table C Separately below the main periodic table D They are not in the periodic table
4 Chemical properties of elements depend mainly on: A Atomic mass B Number of neutrons C Valence electrons D Atomic size
5 Metalloids have properties that are: A Only metallic B Only non-metallic C Both metallic and non-metallic D Neither metallic nor non-metallic
6 Bilal is studying the electrical conductivity of elements. He knows that metals are good conductors, while non-metals are poor conductors. Which of the following is a non-metal that can conduct electricity? A Graphite (carbon) B Sulfur C Oxygen D Chlorine
7 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
8 Rachel is studying the reactivity of halogens. She knows that the halogens undergo displacement reactions. Chlorine can displace bromine from potassium bromide. Which halogen is the most reactive? A Iodine B Bromine C Chlorine D Fluorine
9 Quinn is studying the halogens, which are Group 17 elements. He knows that fluorine is a pale yellow gas and chlorine is a greenish-yellow gas. What is the appearance of bromine at room temperature? A Colorless gas B Red-brown liquid C Black solid D Purple gas
11 Ming is studying transition elements and their compounds. He notes that transition metal compounds are often colored. Why are transition metal compounds colored? A Because they absorb light due to electron transitions in d-orbitals B Because they are always solid C Because they react with acids D Because they have variable oxidation states
12 Metals generally have: A High electronegativity B Low ionization energy C High ionization energy D Poor conductivity
13 David is learning about the electronic configuration of elements. He knows that the electronic configuration of sodium is 2,8,1. How many valence electrons does sodium have? A 1 B 2 C 3 D 8
14 Lara is studying the reactivity of alkali metals with water. She knows that sodium reacts vigorously with water. What product is formed when sodium reacts with water? A Sodium oxide B Sodium hydroxide and hydrogen gas C Sodium chloride D Sodium sulfate
15 Nora is studying the properties of noble gases. She knows that they are generally unreactive due to their stable electron configuration. Which noble gas is used in balloons because of its low density? A Helium B Neon C Argon D Krypton
16 Oliver is learning about the uses of transition metals. He knows that some transition metals are used as catalysts in industrial processes. Which of the following is often used as a catalyst? A Sodium B Iron C Chlorine D Helium
17 Fatima is studying the shielding effect. She compares sodium (Na) and potassium (K). Which element has the greater shielding effect? A Sodium B Potassium C Both have the same D Cannot be determined
18 Why noble gases are chemically inert? A High atomic mass B Incomplete valence shell C Complete valence shell D Low electronegativity
19 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
20 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
21 Periods in the periodic table represent: A Number of valence electrons B Number of electron shells C Atomic mass D Type of elements
22 Hina is studying ionization energy. She knows that ionization energy is the energy required to remove an electron from a gaseous atom. As we move across a period from left to right, ionization energy generally: A Decreases B Increases C Stays the same D Fluctuates randomly
23 Uma is comparing the physical properties of metals and non-metals. She knows that metals are good conductors of heat and electricity. Which of the following is a property of non-metals? A High thermal conductivity B High electrical conductivity C Malleability D Poor conductors of heat and electricity