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by BlastRoom
Use chemical-reaction vocabulary to describe reactions, evidence, energy changes, and rate factors.
#us_grade_7_science
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.
In the equation 2H2 + O2 → 2H2O, hydrogen and oxygen are written before the arrow. What role do they have?
Iron reacts with oxygen in air and reddish rust appears after several days. In this reaction, rust is the ____.
Methane burns in oxygen and forms carbon dioxide and water vapor. What term names methane's role?
When zinc metal reacts with hydrochloric acid, zinc chloride stays dissolved after the reaction. Zinc chloride is a ____.
Baking soda and vinegar react, and carbon dioxide gas inflates a small balloon. The carbon dioxide is a ____.
In N2 + 3H2 → 2NH3, ammonia appears to the right of the arrow. What role does ammonia have?
A company makes nylon from chemicals that come from petroleum. The fiber is strong and cheap but adds plastic waste. What term names nylon?
Two clear salt solutions are mixed, and a cloudy white solid settles to the bottom. What is that new solid called?
Use the property table before and after two substances are mixed. What term best names the change?
Aluminum foil is cut into tiny pieces, but each piece is still aluminum. What term names this change?
Vinegar and baking soda fizz in a sealed bag, making a gas with different properties from the starting substances. This is evidence of a ____.
Lead nitrate solution and potassium iodide solution form a yellow solid that settles out. The yellow solid is a ____.
A particle model shows 6 carbon atoms before a reaction and 6 carbon atoms after, only rearranged. What principle does this model support?
A hand-warmer packet reacts and makes the nearby air and hands warmer. Which energy-change term fits the reaction?
An instant cold pack reacts and the pack drops from 22°C to 5°C. What energy-change term describes it?
A beaker feels colder while two solids react inside it. The reaction is ____.
Propane reacts with oxygen in a burner, and the flame heats the air around it. What term describes the reaction?
Magnesium reacts faster in acid warmed from 20°C to 40°C. The rate increased because the reaction had a higher ___.
Zinc fizzes faster in 2 mol/L acid than in 1 mol/L acid. The changed rate factor is acid ___.
A crushed antacid tablet fizzes faster in water than a whole tablet of the same mass. Which rate factor changed?
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.
Warmer to Cooler: Reaching Equilibrium
20 questions
