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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 is an endothermic reaction?
What is an exothermic reaction?
During an exothermic reaction, what usually happens to the temperature of the surroundings?
During an endothermic reaction, what usually happens to the temperature of the surroundings?
Which statement correctly describes energy transfer in an exothermic reaction?
Which statement correctly describes energy transfer in an endothermic reaction?
Which reaction releases heat into the surroundings?
Which reaction requires a net absorption of energy from the surroundings?
Burning wood in a fireplace is an example of:
An instant cold pack becomes cold when activated. Which process best explains this?
Which process is commonly exothermic?
Photosynthesis requires plants to absorb energy from sunlight. It is best described as:
When water freezes, it releases thermal energy to its surroundings. Freezing is:
Which change absorbs heat from the surroundings?
A hand warmer becomes hot after its contents react with oxygen. The reaction is most likely:
Which example involves an endothermic physical change rather than a chemical reaction?
Why does a flame warm your hands when you hold them near a fire?
A student mixes two substances, and the temperature of the mixture falls. Which conclusion is most reasonable?
A student measures the temperature of a solution before and after a reaction. Before: 25°C After: 38°C What type of reaction most likely occurred?
A reaction causes the temperature of a solution to fall from 30°C to 22°C. What does this suggest?
A student touches the outside of a reaction container and notices that it feels warm. Which explanation is most likely?
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
