1.
A tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties.
Correct Answer
A. Periodic table
Explanation
The given correct answer is "periodic table". A periodic table is a tabular display of the chemical elements, organized based on their atomic numbers, electron configurations, and recurring chemical properties. It provides a systematic way to categorize and understand the elements, including their relationships, trends, and patterns. The periodic table is an essential tool in chemistry and is widely used to study and analyze the behavior and properties of elements.
2.
All _______ from atomic numbers 1 (hydrogen) to 118 (ununoctium) have been discovered or synthesized.
Correct Answer
B. Elements
Explanation
The correct answer is "elements" because the statement is referring to the discovery or synthesis of all the different types of elements on the periodic table, from hydrogen to ununoctium.
3.
Is a chemical element with symbol H.
Correct Answer
A. Hydrogen
Explanation
Hydrogen is the correct answer because it is the chemical element with the symbol H. It is the lightest and most abundant element in the universe, commonly found in combination with other elements such as oxygen to form water. Hydrogen is also used as a fuel source, particularly in hydrogen fuel cells, and has various industrial applications.
4.
Is a chemical element with symbol O.
Correct Answer
A. Oxygen
Explanation
Oxygen is a chemical element with the symbol O. It is a highly reactive gas and is essential for most forms of life on Earth. Oxygen is the third most abundant element in the universe and is a key component of the Earth's atmosphere. It is involved in various biological and chemical processes, including respiration, combustion, and the formation of ozone. Oxygen is also used in various industries, such as medicine, welding, and aerospace.
5.
Is a chemical element with symbol Be.
Correct Answer
A. Beryllium
Explanation
Beryllium is the correct answer because it is a chemical element with the symbol Be. Beryllium is a lightweight metal that is highly toxic and has a high melting point. It is commonly used in various industries, including aerospace, electronics, and nuclear reactors, due to its unique properties such as high strength, low density, and excellent thermal conductivity.
6.
Is a chemical element with symbol Na.
Correct Answer
A. Sodium
Explanation
The chemical element with the symbol Na is sodium. Sodium is a highly reactive metal that belongs to the alkali metal group of elements. It is commonly found in compounds such as table salt (sodium chloride) and plays a crucial role in various biological processes. Sodium is known for its characteristic yellow color when burned and its ability to form explosive reactions with water.
7.
Is a chemical element with symbol Mg.
Correct Answer
A. Magnesium
Explanation
The correct answer is Magnesium. Magnesium is a chemical element with the symbol Mg. It is a shiny gray solid that is highly reactive and is commonly found in minerals such as dolomite and magnesite. Magnesium is an essential element for the human body and is involved in various biological processes. It is used in the production of alloys, fireworks, and as a component in some medications.
8.
Is a chemical element with symbol K.
Correct Answer
A. Potassium
Explanation
The given correct answer for this question is "Potassium." Potassium is a chemical element with the symbol K. It is a highly reactive metal that is essential for various biological processes in living organisms. It is commonly found in bananas, potatoes, and other fruits and vegetables. Potassium plays a crucial role in maintaining proper functioning of the heart, muscles, and nerves.
9.
Is a chemical element with symbol Ca.
Correct Answer
A. Calcium
Explanation
The correct answer is Calcium. Calcium is a chemical element with the symbol Ca. It is a soft gray alkaline earth metal and is the fifth-most abundant element by mass in the Earth's crust. Calcium is essential for living organisms, as it plays a vital role in bone formation, muscle contraction, nerve function, and blood clotting. It is also commonly used in various industries, such as construction, agriculture, and medicine.
10.
Is a chemical element with symbol Li.
Correct Answer
A. Lithium
Explanation
Lithium is the correct answer because it is a chemical element with the symbol Li.
11.
Is a chemical element with symbol Rb.
Correct Answer
A. Rubidium
Explanation
Rubidium is the correct answer because it is the chemical element with the symbol Rb. The other options, Robium and Rabium, do not correspond to any known chemical elements.
12.
Is a chemical element with symbol Sr.
Correct Answer
A. Strontium
Explanation
Strontium is a chemical element with the symbol Sr. It is a silvery-white metallic element that belongs to the alkaline earth metals group. Strontium is highly reactive and is commonly used in fireworks and flares to produce a bright red color. It is also used in the production of glass for cathode ray tubes and in the medical field for certain imaging techniques. Strontium has various isotopes, with strontium-90 being a radioactive isotope that is a byproduct of nuclear reactors and nuclear weapons testing.
13.
Is a chemical element with symbol Cs.
Correct Answer
A. Caesium
Explanation
Caesium is the correct answer because it is a chemical element with the symbol Cs. The other options, Cersium and Cescums, do not exist as chemical elements.
14.
Is a chemical element with symbol Ba.
Correct Answer
A. Barium
Explanation
Barium is the correct answer because it is the chemical element with the symbol Ba. The question is asking for the element that has the symbol Ba, and out of the given options, only Barium matches this criterion.
15.
Is a chemical element with symbol Fr.
Correct Answer
A. Francium
Explanation
Francium is the correct answer because it is the only option that matches the given clue, which is "a chemical element with symbol Fr." Francium is a highly radioactive element with the symbol Fr on the periodic table. Ferium and Frustum are not recognized chemical elements, so they are incorrect options.
16.
Is a chemical element with symbol Ra.
Correct Answer
A. Radium
Explanation
Radium is the correct answer because it is a chemical element with the symbol Ra. Radium is a highly radioactive element that is found in uranium ores and has various uses in medicine and industry. It was discovered by Marie and Pierre Curie in 1898 and has a symbol Ra on the periodic table. Radon and Ramon are not chemical elements and do not have the symbol Ra.
17.
Is a chemical element with symbol Sc.
Correct Answer
A. Scandium
Explanation
Scandium is a chemical element with the symbol Sc. This means that the correct answer is Scandium, as it matches the given symbol and is a known chemical element.
18.
Is a chemical element with symbol Y.
Correct Answer
A. Yttrium
Explanation
Yttrium is the correct answer because it is the only chemical element symbol that starts with the letter Y. Yttrium is a silvery-metallic transition metal found in the periodic table with the symbol Y. Yttrium is commonly used in alloys and has various applications in electronics, lasers, and superconductors.
19.
Is a chemical element with symbol Ti.
Correct Answer
A. Titanium
Explanation
The correct answer is Titanium because it is the chemical element with the symbol Ti.
20.
Is a chemical element with symbol V.
Correct Answer
A. Vanadium
Explanation
Vanadium is a chemical element with the symbol V. This means that when referring to the periodic table, the element with the symbol V corresponds to vanadium. The other options, Varium and Villium, are not recognized chemical elements and do not have the corresponding symbol V. Therefore, the correct answer is Vanadium.
21.
Is a chemical element with symbol Cr.
Correct Answer
A. Chromium
Explanation
The correct answer is Chromium because it is the chemical element with the symbol Cr.
22.
Is a chemical element with symbol Mn.
Correct Answer
A. Manganese
Explanation
The correct answer is Manganese because it is the only option that matches the given definition of a chemical element with the symbol Mn. Mandarin and Mandarium are not chemical elements and do not have the symbol Mn associated with them.
23.
Is a chemical element with symbol Fe.
Correct Answer
A. Iron
Explanation
The correct answer is Iron because it is a chemical element with the symbol Fe. Fermium and Ferium are not chemical elements and do not have the symbol Fe.
24.
Is a chemical element with symbol Co.
Correct Answer
A. Cobalt
Explanation
The chemical element with the symbol Co is Cobalt.
25.
Is a chemical element with symbol Ni.
Correct Answer
A. Nickel
Explanation
Nickel is a chemical element with the symbol Ni. This means that the correct answer to the question is Nickel.
26.
Is a chemical element with symbol Cu.
Correct Answer
A. Copper
Explanation
The chemical element with the symbol Cu is Copper.
27.
Is a chemical element with symbol Zn.
Correct Answer
A. Zinc
Explanation
Zinc is a chemical element with the symbol Zn. This means that the correct answer is Zinc.
28.
Is a chemical element with symbol Zr.
Correct Answer
A. Zirconium
Explanation
Zirconium is the correct answer because it is the chemical element with the symbol Zr. The other options, Zirbium and Zetron, do not exist as chemical elements.
29.
Is a chemical element with symbol Nb.
Correct Answer
A. Niobium
Explanation
Niobium is a chemical element with the symbol Nb. This statement directly matches the given correct answer.
30.
Is a chemical element with symbol Mo.
Correct Answer
A. Molybdenum
Explanation
Molybdenum is a chemical element with the symbol Mo. This means that the correct answer is Molybdenum.
31.
Is a chemical element with symbol Tc.
Correct Answer
A. Technetium
Explanation
Technetium is the correct answer because it is the only chemical element among the options that has the symbol Tc. Tactium and Ticterium are not recognized chemical elements, so they cannot be the correct answer. Therefore, Technetium is the only logical choice for the given question.
32.
Is a chemical element with symbol Ru.
Correct Answer
A. Ruthenium
Explanation
Ruthenium is the correct answer because it is a chemical element with the symbol Ru.
33.
Is a chemical element with symbol Rh.
Correct Answer
A. Rhodium
Explanation
Rhodium is a chemical element with the symbol Rh. This element is known for its silvery-white appearance and high reflectance. It belongs to the platinum group of metals and is commonly used as a catalyst in various chemical reactions. Rhodium is also used in the production of jewelry and as a coating for optical instruments to enhance their reflectivity. Therefore, the correct answer is Rhodium.
34.
Is a chemical element with symbol Pd.
Correct Answer
A. Palladium
Explanation
Palladium is a chemical element with the symbol Pd. This means that the correct answer is Palladium.
35.
Is a chemical element with symbol Ag.
Correct Answer
A. Silver
Explanation
The correct answer is Silver because it is the chemical element with the symbol Ag.
36.
Is a chemical element with symbol Cd.
Correct Answer
A. Cadmium
Explanation
Cadmium is a chemical element with the symbol Cd. It is the correct answer because it matches the given description in the question. Cadmium is a soft, bluish-white metal that is commonly used in batteries, pigments, and coatings. It is known for its toxic properties and is regulated in many countries due to its harmful effects on human health and the environment.
37.
Is a chemical element with symbol Hf.
Correct Answer
A. Hafnium
Explanation
Hafnium is the correct answer because it is a chemical element with the symbol Hf. Hafnium is a lustrous, silvery-gray metal that is commonly found in zirconium minerals. It is used in a variety of applications, including nuclear reactors, superalloys, and electrical circuits. Hafnium has a high melting point and is corrosion-resistant, making it a valuable material in many industries.
38.
Is a chemical element with symbol Ta.
Correct Answer
A. Tantalum
Explanation
Tantalum is the correct answer because it is the only option that matches the given description, which is "a chemical element with symbol Ta." Tantium and Tantelium are not valid chemical elements and do not have the symbol Ta. Therefore, Tantalum is the only logical choice.
39.
Is a chemical element with symbol W.
Correct Answer
A. Tungsten
Explanation
Tungsten is a chemical element with the symbol W. This statement provides a clear and concise description of the correct answer.
40.
Is a chemical element with symbol Re.
Correct Answer
A. Rhenium
Explanation
Rhenium is a chemical element with the symbol Re. This means that the correct answer is Rhenium.
41.
Is a chemical element with symbol Os.
Correct Answer
A. Osmium
Explanation
Osmium is a chemical element with the symbol Os. It is the correct answer because it matches the given description. Osmium is a dense, bluish-white transition metal that is found in the platinum group of elements. It is known for its high density and is often used in alloys to make electrical contacts and fountain pen tips. Osmium is also used in the production of certain types of glass and as a catalyst in chemical reactions.
42.
Is a chemical element with symbol Ir.
Correct Answer
A. Iridium
Explanation
Iridium is the correct answer because it is a chemical element with the symbol Ir.
43.
Is a chemical element with symbol Pt.
Correct Answer
A. Platinum
Explanation
Platinum is a chemical element with the symbol Pt. This means that Pt is the abbreviation used to represent platinum in the periodic table. Platinum is a dense, malleable, and highly valuable metal that is known for its resistance to corrosion and its use in various industries, including jewelry making, catalytic converters, and electronics.
44.
Is a chemical element with symbol Au.
Correct Answer
A. Gold
Explanation
Gold is a chemical element with the symbol Au. This means that the correct answer is gold.
45.
Is a chemical element with symbol Hg.
Correct Answer
A. Mercury
Explanation
Mercury is the correct answer because it is the chemical element with the symbol Hg. The question is asking for the element that has the symbol Hg, and Mercury fits this description. Silver and Gold are not represented by the symbol Hg, so they are not the correct answers.
46.
Is a chemical element with symbol Rf.
Correct Answer
A. Rutherfordium
Explanation
Rutherfordium is the correct answer because it is the only option that matches the given information. The question states that the chemical element has the symbol Rf, and Rutherfordium is the only element with this symbol. Therefore, Rutherfordium is the correct answer.
47.
Is a chemical element with symbol Db
Correct Answer
A. Dubnium
Explanation
Dubnium is the correct answer because it is the chemical element with the symbol Db. Dubnium is a synthetic element that was first synthesized in 1968. It is named after the city of Dubna in Russia, where it was discovered. Dubnium is a highly radioactive element and is not found naturally on Earth. It is primarily used for scientific research purposes and has no known biological role.
48.
Is a chemical element with symbol Sg.
Correct Answer
A. Seaborgium
Explanation
Seaborgium is the correct answer because it is the only option that matches the given description of a chemical element with the symbol Sg. Seaborgium is a synthetic element that was named after Glenn T. Seaborg, a renowned American chemist who played a significant role in the discovery of several transuranium elements.
49.
Is a chemical element with symbol Bh.
Correct Answer
A. Bohrium
Explanation
Bohrium is the correct answer because it is the only option that matches the given information. The question states that the chemical element has the symbol "Bh," and Bohrium is the only element with this symbol. Bhalfium and Belhium are not valid chemical elements, so they can be ruled out as incorrect options.
50.
Is a chemical element with symbol Hs.
Correct Answer
A. Hassium
Explanation
Hassium is the correct answer because it is the only option that matches the given description of a chemical element with the symbol Hs. Hadsium and Hafsium are not valid chemical elements, so they can be ruled out as incorrect options.