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by BlastRoom
Students compare atoms, molecules, elements, compounds, symbols, and formulas.
#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.
A model shows one helium particle by itself, written as He. Is that particle an atom or a molecule?
A model shows two oxygen atoms bonded together and written as O2. What does one O2 particle represent?
One particle of water contains two hydrogen atoms bonded to one oxygen atom. What is one water particle?
A diagram shows only one carbon particle, C, not bonded to anything else. What kind of particle is shown?
A particle has one nitrogen atom bonded to three hydrogen atoms. What kind of particle is it?
In a model of neon gas, each particle is shown as one Ne symbol with no bonds. What are the particles?
A particle labeled CO2 has one carbon atom bonded to two oxygen atoms. What is one CO2 particle?
A student draws one silver particle as Ag with nothing else attached. What does the drawing show?
A pure sample contains only oxygen particles, and every particle is O2. Is the substance an element or a compound?
A pure gas has particles made of one carbon atom and four hydrogen atoms bonded together. What are the particles?
A jar contains only particles of H2O. What type of substance is in the jar?
A balloon contains helium, and each particle is one He atom. What type of substance fills the balloon?
A beaker holds liquid ethanol, and each particle contains carbon, hydrogen, and oxygen atoms bonded together. What are the particles?
A sample of carbon dioxide is pure: every particle is CO2. Why is it not an element?
Which formula represents a molecule made from three atoms in total?
The formula NH3 represents one nitrogen atom bonded to hydrogen atoms. How many hydrogen atoms are in one NH3 molecule?
The formula CO2 includes the symbols C and O. What do these symbols name?
Which formula represents a particle made of only one atom?
A formula has no subscript after an element symbol, as in the O in H2O. What does that mean for one molecule?
Which formula shows a molecule with atoms of two different elements?
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.
What Changes the Rate of Dissolving
20 questions
