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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.
What holds atoms together in a chemical compound?
Which of the following changes does NOT break or form chemical bonds?
What are the starting substances in a chemical reaction called?
What are the new substances formed as a result of a chemical reaction?
What happens to atoms during a chemical reaction?
Breaking chemical bonds is a process that requires energy, making it ____.
Forming new chemical bonds releases energy, making it an ____ process.
What does the prefix 'Endo-' mean in the term Endothermic?
What does the prefix 'Exo-' mean in the term Exothermic?
What is the minimum amount of energy needed to kickstart a chemical reaction?
How does a catalyst (like an enzyme) affect the activation energy of a reaction?
According to the Law of Conservation of Mass, the total mass of the reactants is ____ the total mass of the products.
In the balanced equation CH₄ + 2O₂ → CO₂ + 2H₂O, how many total oxygen (O) atoms are present in the reactants?
The chemical reaction inside an instant cold pack absorbs heat from its surroundings. This is an example of an ____ process.
Cellular respiration in our body releases energy to power cellular functions. What type of reaction is this?
16. When ice melts into liquid water, the intramolecular chemical bonds of water are broken. [ ______ ]
17. Atoms are neither created nor destroyed during a standard chemical reaction. [ ______ ]
18. Bond breaking absorbs energy from the surroundings. [ ______ ]
19. Bond formation releases energy into the surroundings. [ ______ ]
20. Energy is required to separate two bonded atoms from each other. [ ______ ]
21. Activation energy can be thought of as an energy barrier that reactants must overcome. [ ______ ]
22. Striking a match provides the initial thermal energy (friction) needed as activation energy. [ ______ ]
23. Adding a catalyst slows down the rate of a chemical reaction. [ ______ ]
24. In an exothermic reaction, the products have lower potential energy than the reactants. [ ______ ]
25. Photosynthesis in plants is an exothermic process because it releases energy as light. [ ______ ]
26. The Law of Conservation of Energy states that energy can be created out of nothing. [ ______ ]
27. In the reaction 2H₂ + O₂ → 2H₂O, there are 4 Hydrogen atoms in the products. [ ______ ]
28. An instant hot pack warms up because it undergoes an endothermic reaction. [ ______ ]
28. An instant hot pack warms up because it undergoes an endothermic reaction. [ ______ ]
30. A balanced chemical equation has the exact same number of each type of atom on both sides. [ ______ ]
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.
15 questions
