I am a nonmetal. I am in the Oxygen family and row 3. I have 6 valence electrons. I am yellow and have a stinky smell. Who am I?
Sulfur (S)
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25
Choose the one that doesnโt belong (Pb K Cu). Justify your reasoning.
Pb (it is in period 6 while the others are in period 4)
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boom
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gold
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rocket
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baam
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25
Choose the one that doesnโt belong (H B Na). Justify your reasoning.
B (it is in group IIIA while the others are in group IA)
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25
Choose the one that doesnโt belong (At Si Ti). Justify your reasoning.
Ti (because it is metal while the others are metalloids )
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15
I am a gas. I am in the Noble Gas family and row 1. I have only 2 valence electrons. I glow red-orange in an electric field. I can also be found in the Sun. Who am I?
Helium (He)
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15
I am a metalloid. I am in the Nitrogen family and row 4. I have an atomic mass of 74.92. I can be used as a poison. Who am I?
Arsenic (As)
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monster
Reset all scores!
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gift
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shark
Other team loses 10 points!
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lifesaver
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10
Atom X has 8 protons. How many electrons does that atom have? Why?
8 electrons because in an atom the number of p equals to the number of e
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eraser
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gift
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fairy
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5
10
15
20
25
lifesaver
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25
What is strange about the placement of hydrogen in the periodic table?
It is nonmetal but is located in the same group of metal (alkali).
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15
I am a metal. I am in the Carbon family and row 5. I have 50 protons. I am widely used in food packaging. Who am I?