Science & Elements — Hard, Set 2

7 questions · Answers revealed below each question · Print this set

1. 1.Which chemical element has the atomic number 27?

   • A. Chromium
   • B. Cesium
   • C. Carbon
   • D. Cobalt
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   Cobalt

   Did you know? Cobalt (Cobalto) has atomic number 27.

2. 2.Which chemical element bursts into flame on contact with water?

   • A. Plutonium
   • B. Nickel
   • C. Cobalt
   • D. Rubidium
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   Rubidium

   Did you know? Rubidium bursts into flame on contact with water.

3. 3.What is the chemical symbol for Gallium?

   • A. Pt
   • B. Cl
   • C. Ga
   • D. Cr
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   Ga

   Did you know? Gallium (Gálio) has the chemical symbol Ga.

4. 4.What is the chemical symbol for Barium?

   • A. Ba
   • B. Ar
   • C. U
   • D. Th
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   Ba

   Did you know? Barium (Bário) has the chemical symbol Ba.

5. 5.Which chemical element blazes in the bright headlights of cars?

   • A. Sodium
   • B. Beryllium
   • C. Xenon
   • D. Molybdenum
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   Xenon

   Did you know? Xenon blazes in the bright headlights of cars.

6. 6.Which chemical element is a red-brown liquid at room temperature?

   • A. Bromine
   • B. Gold
   • C. Uranium
   • D. Neon
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   Bromine

   Did you know? Bromine is a red-brown liquid at room temperature.

7. 7.What is the chemical symbol for Manganese?

   • A. O
   • B. Mn
   • C. Cr
   • D. Sn
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   Mn

   Did you know? Manganese (Manganês) has the chemical symbol Mn.

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