by BlastRoom
Practice using periodic-table position to predict valence, ions, family behavior, and trends.
#chemistry

20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
An element is in group 2 of the periodic table. Which ion is it most likely to form in an ionic compound?
A main-group element is in group 17. How many valence electrons does its position predict?
An unknown nonmetal is in group 16. In a binary ionic compound with a metal, which charge is it most likely to have?
A main-group element sits in period 3, group 13. How many valence electrons should it have?
A shiny, soft metal is found in group 1. What monatomic ion should you expect it to form in an ionic compound?
A period 2 nonmetal is in group 15. Which ion charge matches its usual electron gain in an ionic compound?
An element occupies group 18 in period 3. Which valence-shell description matches its position?
An element in period 4, group 1 reacts to form an ionic compound. Which ion is most likely?
Rubidium is below potassium in group 1. Which behavior is most likely for rubidium?
Chlorine is in group 17, the halogen family. Which behavior fits that position?
Neon is in group 18 at the end of period 2. What behavior should be expected?
Magnesium is in group 2, the alkaline earth metals. What property is most likely?
Silicon lies along the metalloid staircase in period 3. Which behavior is most likely?
Copper is a d-block transition metal in period 4. Which property best fits its position?
Sodium and chlorine are in period 3. Which comparison is best supported by their positions?
Fluorine and iodine are both halogens. Which comparison follows the periodic trend?
Lithium and cesium are group 1 metals. Which comparison follows the down-a-group trend?
Magnesium is above barium in group 2. Which comparison of first ionization energy is expected?
Aluminum and sulfur are both in period 3. Which atom should have the larger atomic radius?
Potassium and calcium are neighbors in period 4. Which position-based prediction is strongest?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.

Pick a tile, answer, hit bonuses and steals.
Ionic, Covalent or Metallic?
40 questions