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STRAIGHTERLINE CHEMISTRY FINAL EXAM TEST WITH COMPLETE SOLUTIONS
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STRAIGHTERLINE CHEMISTRY FINAL EXAM TEST WITH COMPLETE SOLUTIONS
[Meer zien]Voorbeeld 4 van de 43 pagina's
Voorbeeld 4 van de 43 pagina's
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STRAIGHTERLINE CHEMISTRY FINAL EXAM TEST WITH COMPLETE SOLUTIONS What is the term used for findings that are summarized based on a pattern or trend? a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - correct answer a. Law Which of the following is a tentative explanation for a set of observations? Select one: a. Law b. Hypothesis c. Theory d. Phenomena e. Prediction - correct answer b. Hy pothesis If a liquid contains 60% sugar and 40% water throughout its composition then what is it called? Select one: a. Solute b. Compound c. Homogeneous mixture d. Heterogeneous mixture e. Solvent - correct answer c. Homogeneous mixture Which of the f ollowing does not have a uniform composition throughout? Select one: a. Element b. Compound c. Homogeneous mixture d. Heterogeneous mixture e. Solvent - correct answer d. Heterogeneous mixture Which one of these represents a physical change? Select one: a. Water, when heated, forms steam. b. Bleach turns hair yellow. c. Sugar, when heated, becomes brown. d. Milk turns sour. e. Apples, when exposed to air, turn brown. - correct answer a. Water, when heated, forms steam. How many micrograms are in 65.3 kg? Select one: a. 0.653 μg b. 6.53 × 107 μg c. 6.53 × 104 μg d. 6.53 × 10 -8 μg e. 6.53 × 1010 μg - correct answer e. 6.53 × 1010 μg A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm) Select one: a. 58 cm3 b. 1.7 x 105 cm3 c. 90 cm3 d. 3.4 cm3 e. 34 cm3 - correct answer a. 58 cm3 Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to Select one: a. 16.4 in3 b. 6.45 in3 c. 0.394 in3 d. 0.155 in3 e. 0.0610 in3 - correct answer e. 0.0610 in3 What terms defines a mass which is exactly equal to 1/12 the mass of one carbon -12 atom? Select one: a. Isotope number b. Mass number c. Mass -to-charge ratio d. Atomic number e. Atom ic mass unit - correct answer e. Atomic mass unit How many neutrons are there in an atom of lead whose mass number is 208? Select one: a. 82 b. 126 c. 208 d. 290 e. none of them - correct answer b. 126 Which of these elements is chemically similar to magnesium? Select one: a. Sulfur b. Calcium c. Iron d. Nickel e. Potassium - correct answer b. Calcium C(graphite) and C(diamond) are examples of: Select one: a. isotopes of carbon. b. allotropes of carbon. c. the law of definite proportions. d. different carbon ions. - correct answer b. allotropes of carbon. The 80Br - ion has Select one: a. 45 protons, 35 neutrons, 45 electrons. b. 35 protons, 45 neutrons, 34 electrons. c. 35 protons, 45 neutrons, 36 electrons. d. 45 protons, 35 neutrons, 46 electrons. e. 35 protons, 45 neutrons, 46 electrons. - correct answer e. 35 protons, 45 neutrons, 46 electrons. The formula for sodium sulfide is Select one: a. NaS b. K2S c. NaS2 d. Na2S e. SeS - correct answer d. Na2S Which one of the following f ormulas of ionic compounds is the least likely to be correct? Select one: a. NH4Cl b. Ba(OH)2 c. Na2SO4 d. Ca2NO3 e. Cu(CN)2 - correct answer d. Ca2NO3 What is the name of ClO - ion? Select one: a. hypochlorite b. chlorate c. chlorite d. perchlorate e. perchlorite - correct answer a. hypochlorite Which of the following is a molecular formula for a compound with an empirical formula of CH? Select one: a. C2H6 b. C3H9 c. C4H10 d. C6H6 e. None of the answers is correct. - correct answer d. C6H6 Whic h is the correct electron configuration for gold? Select one: a. [Xe]4f145d96s2 b. [Xe]4f145d106s2 c. [Xe]4f135d106s2 d. [Xe]4f145d106s1 e. None of the electron configurations is correct. - correct answer d. [Xe]4f145d106s1 A(n) _________ is a point at which a standing wave has zero amplitude. Select one: a. crevice b. node c. pit d. burrow e. orbital - correct answer b. node The Pauli exclusion principle states that no ____ electrons within an atom can have the same ____ quantum numbers. Select one: a. 4; 6 b. 2; 4 c. 3; 6 d. 6; 10 e. 3; 8 - correct answer b. 2; 4 Emission spectra Select one: a. cannot be used to identify an unknown atom. b. can be used to identify unknown atoms. c. can be explained by the movement of protons colliding with electrons.Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
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