General, Organic, and Biological Chemistry, 3e Frost Chapter 1 Chemistry Basics - Matter and Measurement 3 Which of the following represents a homogeneous mixture?. 4 All the different
Trang 1General, Organic, and Biological Chemistry, 3e (Frost)
Chapter 1 Chemistry Basics - Matter and Measurement
3) Which of the following represents a homogeneous mixture?
A) Brass (an alloy)
B) Chocolate chip ice cream
Trang 24) All the different kinds of substances that make up all of the material of the universe are known collectively as:
6) Which of the following is a homogeneous mixture?
A) A cup of black coffee
B) A package of cake mixture
C) Iron filings and sulfur
D) Oil and vinegar salad dressing
Trang 38) What is the correct element symbol for palladium?
Trang 411) Which of the following is a metal?
Trang 515) Which of the following is a nonmetal?
Trang 618) How many H atoms are in the molecule C6H3(C3H7)2(C2H5)?
Trang 722) Which of the following is the correct conversion factor to convert mL to L?
Trang 826) How many significant figures are there in the following number: 53,000 pounds? A) 1
Trang 930) Write the numerical value for 56,000 ÷ 7.89 with the correct number of significant figures: A) 70.976
Trang 1034) Which of the following statements bests describes a liquid?
A) Definite shape and volume
B) Indefinite shape and volume
C) Indefinite shape but definite volume
D) Definite shape but indefinite volume
35) Which of the following statements bests describes a solid?
A) Definite shape and volume
B) Indefinite shape and volume
C) Indefinite shape but definite volume
D) Definite shape but indefinite volume
36) Which of the following statements bests describes a gas?
A) Definite shape and volume
B) Indefinite shape and volume
C) Indefinite shape but definite volume
D) Definite shape but indefinite volume
Trang 1138) Identify the correct ordering of attractions among particles in the three states of matter A) Solid < liquid < gas
B) Solid > liquid > gas
C) Gas < solid < liquid
D) Solid < gas < liquid
39) Which of the following substances has the lowest density?
A) A mass of 1.5 kg and a volume of 1.2 L
B) A mass of 25 g and a volume of 20 mL
C) A mass of 750 g and a volume of 70 dL
D) A mass of 5 mg and a volume of 25 uL
Trang 1242) Which of the following is not a physical change?
C) zinc reacts with hydrochloric acid to produce hydrogen gas
D) all the above
Trang 1346) What is the coefficient for O2 when this equation is balanced with the lowest whole number coefficients?
Trang 157) Iron is an example of a micronutrient
Trang 162) Identify the number of particles of each element in the following compounds:
A) H2O2 — hydrogen peroxide
B) C6H12O6 — glucose
C) CaCO3 — chalk
Answer:
A) 2 hydrogen atoms, 2 oxygen atoms
B) 6 carbon atoms, 12 hydrogen atoms, 6 oxygen atoms
C) 1 calcium atom, 1 carbon atom, 3 oxygen atoms
Trang 174) Write the total number of atoms in each of the following formulas
Section: 1-3
Global: G3
LO: 1.3
Trang 188) Express the following in exponential form:
Trang 1911) Calculate the following percentages
Trang 2015) Convert the following temperatures to the indicated units:
18) Calculate the densities of the following objects in g/mL
A) A mass of 86 g and a volume of 95 mL
B) A mass of 1.6 kg and a volume of 1.3 L
C) A mass of 17 kg and a volume of 850 mL
D) A mass of 870 g and a volume of 25 dL
E) A mass of 45 mg and a volume of 45 μL
Answer: all answers in g/mL: A) 0.91, B) 1.2, C) 20, D) 0.35, E) 1.0
Diff: 2
Section: 1-4
Trang 2119) Calculate the mass of sugar in 250 g of a mixture that contains 35 mass percent sugar Answer: 88 g
B) 4 HI + MnO2 → MnI2 + H2O + I2
C) AlCl3 + KOH → Al(OH)3 + KCl
D) C4H8 + O2 → CO + H2O
Answer:
A) 2 VCl3, 3 Mg
B) 1 MnO2, 1 MnI2, 2 H2O
C) 1 AlCl3, 3 KOH, 1 Al(OH)3, 3 KCl
D) 1 C4H8, 4 O2, 4 CO, 4 H2O
Diff: 3
Section: 1-6
Global: G2
LO: 1.6