Chemistry Basics and Scientific Method

What is the name of the statement that sums up what you learned from an experiment and indicates if the hypothesis is proven or disproven?

What is a prediction or possible explanation to a question that can be tested in an experiment called?

Which of the following represents the number 2.34x10^-7 in decimal notation?

What is the correct expression of the number 0.051065 to four significant figures?

Which set of measurements best represents good accuracy for a liquid volume of 20.5 mL?

What is the chemical formula of diphosphorus monobromide?

Which of the following is considered a chemical reaction?

Which one of the following is a chemical equation?

As you move from left to right across the periodic table, what happens to atomic radius?

Which gas most closely resembles ideal gas behavior?

What is the balanced form of the equation: Ag + O2 → Ag2O?

Which is NOT an acceptable name for Hg2Cl2?

What occurs to the volume of a fully inflated balloon when it is taken outside on a cold day?

Which of the following substances is NOT an acid?

What is the standard pressure of the atmosphere at sea level?

In which flask is the pressure highest if each contains the same number of molecules?

When NH4Cl hydrolyzes, the resulting solution is what type?

What is the molar mass of a gas if 1.60 grams occupies a volume of 2.24 L at STP?

Which two acids are mixed in aqua regia, a reagent used to dissolve gold?

Which conjugate acid/base pairs should be used for preparing a buffer near pH 7.15?

When chromium changes from an oxidation state of +3 to +6, what must happen to Cr3+?

During silver electroplating, what happens to silver ions in solution?

Which equation does NOT represent a redox reaction?

What is the %w/w H2O in the cheese sample if its initial mass is 875.4 mg and the final mass is 545.8 mg?

What is the best procedure to ensure quantitative transfer of a precipitant from a beaker to filter paper?

Which method should NOT be used to preserve a water sample collected for analysis of oil and grease?

When oil and water come into contact, how will they behave?

What defines conductivity in relation to electric current?

What unique property does water have compared to other materials when in solid form?

Which of the following statements about electrical conductivity is FALSE?

Which of the following statements about pH is FALSE?

What is the actual volume contained in a 50.0 mL volumetric flask given the mass of water is 50.1227 g and its density at 25 C is 0.99707 g/mL?

What conclusion can the lab supervisor draw after titrating NaOH with HCl, using 20.32 mL of acid at the endpoint?

In which titrations does pH = 7.0 occur at the equivalence point?

Which of the following practices is not recommended for good sampling?

In liquid-liquid extraction, if a drop of water added to the top layer dissolves, what does this imply about that layer?

What is the process called when a sample is heated to its solvent's boiling point and volatile analytes are collected from the vapor phase?

Which type of analysis is not suitable for glass containers?

What is the main factor to determine which liquid is aqueous in a liquid-liquid extraction?