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by BlastRoom
A cumulative review from lab safety through nuclear chemistry.
#chemistry
100 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 student splashes dilute acid on one hand during a lab. What should the student do first?
A graduated cylinder meniscus sits halfway between the 36 mL and 37 mL marks. What volume should be recorded?
How many significant figures are in 0.00450 g?
A sample has a mass of 54.0 g and a volume of 20.0 mL. What is its density?
Salt is completely dissolved in water so the sample looks uniform throughout. How is the sample classified?
Rust forms on an iron nail after it is left in moist air. What type of change is this?
A mixture contains sand, salt, and water. Which procedure best separates the sand and recovers solid salt?
Which safety equipment should be worn to protect the eyes whenever chemicals are heated or mixed?
Which tool is most appropriate for measuring the mass of a solid sample in a chemistry lab?
Convert 0.250 L to milliliters.
Which property is intensive rather than extensive?
A sealed bottle contains only pure oxygen gas, O2. How is the sample classified?
An atom has atomic number 17 and mass number 35. How many neutrons are in the atom?
A magnesium ion is written Mg2+. How many electrons does it have?
Chlorine is 75.8% 35Cl with mass 34.97 amu and 24.2% 37Cl with mass 36.97 amu. What is its average atomic mass?
Across a period from left to right, what generally happens to atomic radius?
Which element has the greatest electronegativity?
What did Mendeleev do when arranging his periodic table?
Rutherford's gold foil experiment showed that most alpha particles passed through, but a few deflected sharply. What did he conclude?
In the Bohr model, what happens when an electron falls from a higher energy level to a lower one?
When 23892U emits an alpha particle, what nucleus remains?
Carbon-14 undergoes beta-minus decay. What daughter nucleus forms?
A radioisotope has a half-life of 5 days. How much of a 10.0 g sample remains after 10 days?
For a neutral atom written 4020Ca, which set of particles is correct?
Which description fits most Group 1 alkali metals?
Why are noble gases usually very unreactive?
What is the correct name for MgBr2?
What is the correct formula for calcium nitrate?
What happens in a covalent bond?
Which statement describes the formation of NaCl from neutral sodium and chlorine atoms?
How many valence electrons are in one CO2 molecule?
What is the molecular geometry of CH4?
What is the molecular geometry of NH3?
Why is a water molecule polar?
What is the correct name for FeCl3?
What is the correct name for N2O5?
What is the formula for sulfuric acid?
Which formula represents the ammonium ion?
Which ion is chlorate?
Which intermolecular force is especially important between HF molecules?
Which property is most typical of a network covalent solid such as SiO2?
What is the correct formula for aluminum oxide?
What is the correct balanced equation for nitrogen gas reacting with hydrogen gas to form ammonia?
Which reaction type is shown by 2KClO3 -> 2KCl + 3O2?
Mixing AgNO3(aq) and NaCl(aq) forms solid AgCl. What kind of reaction is represented?
What are the products of complete combustion of propane, C3H8, in oxygen?
What type of reaction is Zn(s) + CuSO4(aq) -> ZnSO4(aq) + Cu(s)?
In a closed system, 10.0 g of reactants form products during a chemical reaction. What total mass of products should form?
What is the oxidation number of oxygen in H2O2?
In Mg + 2HCl -> MgCl2 + H2, which substance is oxidized?
Which coefficients balance Al + O2 -> Al2O3?
For HCl(aq) + NaOH(aq), which net ionic equation represents neutralization?
In BaCl2(aq) + Na2SO4(aq) -> BaSO4(s) + 2NaCl(aq), which ions are spectators?
What type of reaction is CaO + CO2 -> CaCO3?
Copper metal is placed in AgNO3(aq). The activity series lists Cu above Ag. What should happen?
Which statement describes reduction in a redox reaction?
What is the molar mass of H2O using H = 1.01 g/mol and O = 16.00 g/mol?
How many molecules are in 2.00 mol of CO2?
What mass is 0.500 mol of NaCl? Use molar mass 58.44 g/mol.
How many moles are in 10.0 g of CaCO3? Use molar mass 100.09 g/mol.
For 2H2 + O2 -> 2H2O, how many moles of H2O form from 4.0 mol H2 with excess O2?
For 2Al + 3Cl2 -> 2AlCl3, which reactant limits the reaction if 4 mol Al and 3 mol Cl2 are mixed?
For 2KClO3 -> 2KCl + 3O2, what mass of O2 forms from 5.00 g KClO3? Use KClO3 = 122.55 g/mol.
A gas has P = 1.50 atm, V = 2.00 L, and T = 298 K. How many moles are present? Use R = 0.0821 L·atm/(mol·K).
A gas at 1.0 atm has a volume of 2.0 L. At constant temperature, what pressure gives a volume of 0.50 L?
A gas occupies 3.00 L at 300 K. At constant pressure, what volume will it occupy at 450 K?
At STP, what volume is occupied by 0.250 mol of an ideal gas?
What is the molarity of a solution containing 0.250 mol NaCl in 0.500 L of solution?
How many milliliters of 2.00 M stock solution are needed to make 250.0 mL of 0.500 M solution?
How many moles of NaOH are in 35.0 mL of 0.200 M NaOH?
What is the percent by mass of oxygen in CO2? Use C = 12.01 and O = 16.00.
A compound is 40.0% C, 6.7% H, and 53.3% O by mass. What is its empirical formula?
A gas has density 1.25 g/L at STP. What is its molar mass?
What mass of KCl is needed to make 0.250 L of 0.100 M KCl? Use KCl = 74.55 g/mol.
Which phase change turns a solid directly into a gas?
During boiling at constant pressure, added energy does not raise the temperature until the liquid has vaporized. Why?
Which statement describes an exothermic reaction?
A 50.0 g sample of water warms by 5.0°C. How much heat is absorbed? Use c = 4.184 J/(g·°C).
Why does raising temperature usually increase reaction rate?
What is the effect of adding a catalyst to a reaction?
At dynamic equilibrium in a closed system, what is true?
For N2 + 3H2 ⇌ 2NH3 + heat, what happens when temperature is lowered?
For N2(g) + 3H2(g) ⇌ 2NH3(g), what happens when pressure is increased?
What is a saturated solution?
How does increasing temperature usually affect the solubility of gases in water?
What happens to the vapor pressure of a liquid as temperature rises?
If two similar molecular substances differ mainly in intermolecular force strength, which one usually has the higher boiling point?
Which statement describes an endothermic process?
Why does increasing reactant concentration often increase reaction rate?
What is the triple point on a phase diagram?
A solution has pH 3. How should it be classified?
At 25°C, a solution has pH 9. What is its pOH?
What is the hydrogen ion concentration of a solution with pH 2?
Which statement correctly compares strong acid and concentrated acid?
According to Arrhenius, what does a base produce in water?
In Brønsted-Lowry theory, what is an acid?
What are the products of HCl(aq) reacting with NaOH(aq)?
Which description defines a hydrocarbon?
Which description fits an alkane?
Which functional group identifies an alcohol?
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.
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Chemistry Review: Atoms, the Periodic Table and Bonding
60 questions
