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by BlastRoom
Use matter vocabulary to describe substances, mixtures, formulas, and dissolving.
#us_grade_7_science
20 questions
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Answer to place stones and capture territory.
Outrun the snow together.
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More correct answers pulls the rope your way.
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Answer, then tap to leap the frozen ridge.
A silver sample contains only atoms with chemical symbol Ag and cannot be broken into simpler substances by chemical means. What term describes the sample?
Water vapor contains H2O particles; each particle has hydrogen and oxygen atoms chemically bonded. What term describes water?
A periodic table square for carbon shows the large letter C. What vocabulary term names that one-letter code?
A bottle label says CO2 for carbon dioxide gas. What term names CO2, which tells the kinds and numbers of atoms?
An unknown liquid has one boiling point and a constant density when tested several times. What term describes matter identified by characteristic properties?
A cube has mass 24 g and volume 8 cm³, so its mass per unit volume is 3 g/cm³. What property is reported?
A jar holds sand and iron filings, and a magnet pulls out the iron grains. What term describes the sample before separation?
At 25°C, extra sugar crystals remain after no more dissolves in 100 mL water. What property is being tested?
When powdered drink mix dissolves evenly in water, the drink mix is the ___.
In salt water, the water that dissolves the salt is the ___.
After blue dye spreads evenly through water, the beaker contains an aqueous ___.
Adding 50 mL water to a salt solution spreads the same solute through more solvent, so the solution has lower ___.
Crushing a sugar cube before adding it to tea increases its exposed ___, so it dissolves faster.
Stirring cocoa powder into warm milk uses ___, helping particles contact the liquid and dissolve faster.
A particle model shows one large oxygen sphere bonded to two smaller hydrogen spheres, repeated in separate groups. What term describes each group?
A formula card shows C6H12O6. Using chemical symbols, what atoms are in one molecule?
A model displays the chemical formula H2SO4. How many hydrogen atoms are shown in one molecule?
A particle model shows only identical CO2 molecules throughout a closed container, with no other particles present. What classification fits the sample?
In a model, blue and yellow particles are separate, not bonded, and spread evenly through one liquid layer. What term describes the sample?
A model compares equal sugar masses in equal water volumes. The warmer cup clears first while stirring and sugar size stay the same. Which condition changed dissolution rate?
Crack the passcode before the zombies get in.
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20 questions
