Atoms
Measurement
Solubility Rules
Redox
Gas Laws
100
In a cathode ray tube, electrons are bent toward a) a positively charged plate. b) a negatively charged plate.
What is A.
100
The number of significant digits in 0.30500 is a) 1 d) 4 b) 2 e) 5 c) 3
What is E.) 5
100
NaOH, KOH, Mg(OH)2 NH4OH, Ca(OH)2, Sr(OH)2, Ba(OH)2. Which one is not soluble?
What is Mg(OH)2
100
Determine the oxidation number of each element in the following ions or compound: CaH2
What is Ca2+ H-1 Exceptions: Metal hydrides like NaH and CaH2 (H = -1)
100
Choose from the following: Avogadro's Law, Boyle's Law, Charles Law, Dalton's Law, Gay-Lussac's Law. At constant volume, the pressure exerted by a given mass of gas varies directly with the absolute temperature.
Who is Gay-Lussac's Law
200
Which element has the highest melting point? a) Pb b) Au c) Os d) W e) Hg
What is d.) W
200
Chromatography is a good way to separate the a) elements in a compound b) the components in a mixture c) the atoms in an element d) the phases of a pure substance
What is B.
200
NaOH Fe2S3 MgSO4 Which compound is insoluble?
What is Fe2S3
200
Determine the oxidation number of each element in the following ions or compounds: SF6
What is S+6, F-1
200
Choose from the following: Avogadro's Law, Boyle's Law, Charles Law, Dalton's Law, Gay-Lussac's Law. The total pressure of a mixture of gases is the sum of the individual pressures.
Who is Dalton's Law
300
Which of the following is an isotope of the element with 20 protons (p=20) and 22 neutrons (n=22)? a) titanium-22 c) calcium-40 b) zirconium-40 d) titanium-48
What is C.) Calcium-40
300
A solution of sugar water may be defined as a a) heterogeneous mixture b) homogeneous mixture c) heterogeneous compound d) homogeneous compound e) homogeneous element
What is B.
300
PbCl2 Ba(NO3)2 MgCO3 Which compound is soluble?
What is Ba(NO3)2
300
Determine the oxidation number of each element in the following ions or compounds: PCl4+
What is P+5, Cl-1
300
When dilute nitric acid was added to a solution of one of the following chemicals, a gas was evolved, This gas turned a drop of limewater, Ca(OH)2, cloudy, due to the formation of a white precipitate. The chemical was (A) household ammonia, NH3 (B) baking soda, NaHCO3 (C) table salt, NaCl (D) epsom salts, MgSO4 . 7H2O (E) bleach, 5% NaOCl
What is B. NaHCO3 Limewater turns cloudy when CO2 is present.
400
His model of the atom has been called the “plum pudding” Model.
Who is J.J. Thomson
400
Wafting” is the proper technique for a) neutralizing a spilled acid. b) putting out burning clothing. c) washing chemicals from the eye. d) smelling a chemical substance. e) observing the color of a chemical.
What is D.
400
Li,Na, k, Rb, Cs What do these elements have in common?
What is always soluble.
400
In the following reactions, decide which reactant is oxidized and which is reduced. Designate the oxidizing agent and reducing agent. 2 Mg(s) + O2(g) >>>>2 MgO(s)
What is Mg Oxidized and Oxygen is reduced.
400
A sample of 0.0100 mole of oxygen gas is confined at 37° C and 0.216 atmosphere. What would be the pressure of this sample at 15° C and the same volume?
What is .201 atm.
500
Which scientist studied matter in cathode ray tubes?
Who is J.J. Thomson
500
The dimensions of a rectangular solid are 8.00 cm long, 4.00 cm wide, and 2.00 cm high. If the density of the solid is 10.0 g/cm3, what is its mass? a) 10/64 grams d) 320 grams b) 10.0 grams e) 640 grams c) 64.0 grams
What is E.) 640 grams.
500
BaSO4, PbSO4, Ag2SO4 and SrSO4 . What does this group of compounds have in common?
What is all are insoluble.
500
Determine the oxidation number of each element in the following ions or compound: CaH2
What is Ca2+ H-1 Exceptions: Metal hydrides like NaH and CaH2 (H = -1)
500
A sample of an ideal gas is cooled from 50.0 °C to 25.0 °C in a sealed container of constant volume. Which of the following values for the gas will decrease? I. The average molecular mass of the gas II. The average distance between the molecules III. The average speed of the molecules
What is the average speed of the molecules
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