CHEM 111 Exam 1 Study Guide (Chapter 1-3)

Give the possible values for ml for a d orbital. A) 0, 1, 2 B) -1, 0, 1 C) 1, 2, 3 D) -2, -1, 0, 1, 2

D) -2, -1, 0, 1, 2

What value of l is represented by an f orbital? A) 1 B) 2 C) 0 D) 3

D) 3

What does "X" represent in the following symbol? 80/35 X A) mercury B) chlorine C) scandium D) bromine E) selenium

D) bromine

Identify the characteristics of a gas. A) definite volume and definite shape B) definite volume and no definite shape C) no definite shape and definite volume D) no definite shape and no definite volume

D) no definite shape and no definite volume

The mass number is equal to A) the sum of the number of the electrons and protons. B) the sum of the number of the neutrons and electrons. C) the sum of the number of protons, neutrons, and electrons. D) the sum of the number of protons and neutrons.

D) the sum of the number of protons and neutrons.

Understand the concept of mole, and be able to do calculations related to it.

1 mol atoms = 6.022*10^23 atoms

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88 × 1014 Hz. A) 229 nm B) 436 nm C) 206 nm D) 485 nm E) 675 nm

B) 436 nm

How many moles of Kr are contained in 398 mg of Kr? A) 4.75 × 10-3 moles Kr B) 33.4 moles Kr C) 2.11 × 10-4 moles Kr D) 2.99 × 10-3 moles Kr E) 1.19 × 10-4 moles Kr

A) 4.75 × 10-3 moles Kr

Calculate the energy of the violet light emitted by a hydrogen atom with a wavelength of 410.1 nm. A) 4.85 × 10-19 J B) 2.06 × 10-19 J C) 1.23 × 10-19 J D) 8.13 × 10-19 J E) 5.27 × 10-19 J

A) 4.85 × 10-19 J

Calculate the mass (in kg) of 4.87 × 1025 atoms of Zn. A) 5.29 kg B) 1.89 kg C) 8.09 kg D) 1.24 kg E) 1.09 kg

A) 5.29 kg

Calculate the mass (in ng) of 2.33 × 1020 atoms of oxygen. A) 6.19 × 106 ng B) 1.62 × 107 ng C) 2.25 × 103 ng D) 3.73 × 106 ng E) 4.69 × 107 ng

A) 6.19 × 106 ng

How many orbitals are contained in the third principal level (n = 3) of a given atom? A) 9 B) 3 C) 18 D) 7 E) 5

A) 9

Which of the following statements about the phases of matter is TRUE? A) In both solids and liquids, the atoms or molecules pack closely to one another. B) Solids are highly compressible. C) Gaseous substances have long-range repeating order. D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. E) Liquids have a large portion of empty volume between molecules.

A) In both solids and liquids, the atoms or molecules pack closely to one another.

When waves of equal amplitude from two sources are out of phase when they interact, it is called A) destructive interference. B) diffraction. C) constructive interference. D) effusion. E) amplitude.

A) destructive interference.

How many sublevels are contained in the second shell (n = 2) of a given atom? A) 1 B) 2 C) 9 D) 4 E) 3

B) 2

What value of l is represented by a d orbital? A) 1 B) 2 C) 0 D) 3

B) 2

How many moles of Cs are contained in 595 kg of Cs? A) 2.23 × 102 moles Cs B) 4.48 × 103 moles Cs C) 7.91 × 104 moles Cs D) 1.26 × 103 moles CsE) 5.39 × 102 moles Cs

B) 4.48 × 103 moles Cs

Identify the characteristics of a liquid. A) definite volume and definite shape B) definite volume and no definite shape C) no definite volume and definite shape D) no definite shape and no definite volume

B) definite volume and no definite shape

All of the following will lead to a homogeneous mixture EXCEPT: A) sugar and coffee. B) mud and water. C) salt and water. D) ice tea and lemonade. E) vinegar and water.

B) mud and water.

Give the numbers for ml for an f orbital. A) 0, 1, 2, 3 B) 1, 2, 3, 4 C) -3, -2, -1, 0, 1, 2, 3 D) -2, -1, 0, 1, 2

C) -3, -2, -1, 0, 1, 2, 3

Calculate the energy of the orange light emitted, per photon, by a neon sign with a frequency of 4.89 × 1014 Hz. A) 3.09 × 10-19 J B) 6.14 × 10-19 J C) 3.24 × 10-19 J D) 1.63 × 10-19 J E) 5.11 × 10-19 J

C) 3.24 × 10-19 J

Which of the following elements is NOT a metal?A) Ba B) Mg C) Xe D) Pb E) Ga

C) Xe

Give the electron configuration for Sr. A) [Kr]5s24d2 B) [Kr]5s24d105p2 C) [Kr]5s2 D) [Kr]5s25d105p2 E) [Kr]5s24d10

C) [Kr]5s2

An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the mass of the element? A) 27.684 amu B) 29.251 amu C) 28.085 amu D) 30.107 amu E) 28.991 amu

C)28.085 amu

What mass (in mg) does 2.63 moles of nickel have? A) 44.8 mg B) 2.23 × 104 mg C) 129 mg D) 3.56 × 105 mg E) 1.54 × 105 mg

E) 1.54 × 105 mg

How many valence electrons do the halogens possess? A) 5 B) 6 C) 2 D) 1 E) 7

E) 7

Understand key concepts in a wave: amplitude, wavelength, frequency, etc.

Frequency (v or nu)- the number of waves that pass a point in a given period of time, determines the color of light. Wavelengths (lamba)- a measure of the distance covered by the wave from the one crest to the next, determines the color of light.

Understand the composition of matter: elements, compounds, mixtures, etc.

Pure substance- made of only ONE component and its composition is invariant. -Elements: a pure substance that can't be chemically broken down into simpler substances; basic building blocks of matter. ex: 0xygen and Helium -Compound: a pure substance composed of two or more elements in a fixed definite proportions. ex: Water Mixtures- a substance composed of two or more components. -Heterogeneous Mixture: Separate into distinct regions. ex: wet sand -Homogenous Mixture: Thoroughly mix. ex: tea w/ sugar

Understand the difference among solids, liquids and gases.

Solids- Have a fixed volume and a rigid shape. Do not pass each other or move around. ex: ice, aluminum, diamonds Liquids- Have a fixed volume but not a fixed shape. Free to move around. ex: water, alcohol, gasoline Gases- Have a lot of space between them making them free to move, these qualities make gases compressible.