1.
What does H stand for?
Correct Answer
A. Hydrogen
Explanation
H stands for hydrogen, which is a chemical element with the atomic number 1. It is the lightest and most abundant element in the universe. Hydrogen is a colorless, odorless, and highly flammable gas. It is commonly used in various industries such as the production of ammonia, petroleum refining, and as a fuel for rockets. Additionally, hydrogen is a key component of water (H2O), which is essential for all known forms of life.
2.
What is the atomic number for Vanadium?
Correct Answer
A. 23
Explanation
The atomic number represents the number of protons in an atom's nucleus. Vanadium is a chemical element with the symbol V and atomic number 23, meaning it has 23 protons.
3.
What is the symbol for Lead?
Correct Answer
C. Pb
Explanation
The symbol for Lead is Pb.
4.
What does F stand for?
Correct Answer
D. Flourine
Explanation
The correct answer is Flourine. Flourine is a chemical element with the symbol F. It is a highly reactive, pale yellow gas that belongs to the halogen group of elements. It is commonly used in various industries, such as in the production of fluorocarbons and pharmaceuticals.
5.
What is the atomic number of Cl?
Correct Answer
A. 17
Explanation
The atomic number of an element represents the number of protons in the nucleus of its atom. In the case of chlorine (Cl), its atomic number is 17, which means it has 17 protons in its nucleus. The other options (27, 20, and 6) are incorrect because they do not correspond to the atomic number of chlorine.
6.
What does Sc stand for?
Correct Answer
D. Scandium
Explanation
Scandium is represented by the symbol "Sc" in the periodic table. Therefore, in the context of this question, "Sc" stands for Scandium.
7.
What is the symbol for Silver?
Correct Answer
C. Ag
Explanation
The symbol for Silver is Ag.
8.
What does Cr stand for?
Correct Answer
B. Chromium
Explanation
Cr stands for Chromium.
9.
What is the symbol for Manganese?
Correct Answer
C. Mn
Explanation
The symbol for Manganese is Mn.
10.
What does Mg stand for?
Correct Answer
A. Magnesium
Explanation
Mg is the chemical symbol for Magnesium on the periodic table. Magnesium is a metallic element that is commonly found in nature and used in various applications. It is known for its light weight, high strength, and excellent corrosion resistance. Magnesium is also an essential element for living organisms and plays a vital role in many biological processes. Therefore, Mg stands for Magnesium.
11.
What does P stand for?
Correct Answer
B. pHospHorus
Explanation
Phosphorus is represented by the symbol P in the periodic table. It is a chemical element with atomic number 15 and is commonly found in minerals and in living organisms. Phosphorus is essential for various biological processes, such as energy production and DNA synthesis. It is also used in the production of fertilizers, detergents, and matches. Therefore, in the context of this question, P stands for Phosphorus.
12.
What is the atomic number of Argon?
Correct Answer
B. 18
Explanation
The atomic number of an element represents the number of protons in its nucleus. In the case of Argon, the correct atomic number is 18. This means that Argon has 18 protons in its nucleus.
13.
What does S stand for?
Correct Answer
B. Sulfur
Explanation
Sulfur is the correct answer because in the question it is asking for the meaning of the letter "S." Among the options given, only sulfur starts with the letter "S." Sodium starts with the letter "N," Silicon starts with the letter "Si," and Scandium starts with the letter "Sc." Therefore, the correct answer is sulfur.
14.
What is the atomic number of Mercury?
Correct Answer
B. 80
Explanation
The atomic number of an element represents the number of protons in the nucleus of its atom. In this case, the correct answer is 80, which corresponds to the atomic number of Mercury.