Chemistry Practice Midterm Part 2

36 Questions | By Joleechem | Last updated: Mar 20, 2022 | Total Attempts: 155

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Chemistry Practice Midterm Part 2 - Quiz

This quiz is to help prepare first year chemistry students for their first semester exam.

Questions and Answers

1.

What is the difference between an element and a compound?
- A.
  
  An element is a homogeneous mixture and a compound is a heterogeneous mixture.
- B.
  
  An element is a pure substance and a compound is a physical mixture of elements.
- C.
  
  An element is a pure substance and a compound is a chemical combination of elements.
- D.
  
  None of these are correct.
2.

You have 5.5 grams of Hydrogen in 50. grams of water. What is the percent of oxygen by mass?
- A.
  
  11%
- B.
  
  9.0%
- C.
  
  .89 %
- D.
  
  89 %
3.

Which Law best describes this statement:"Mass is not created or destroyed, only rearranged."
- A.
  
  Law of Conservation of Mass
- B.
  
  Law of Definite Proportions
- C.
  
  Law of Multiple Proportions
- D.
  
  Law of Octaves
4.

If I mix 8.8 grams of hydrogen with oxygen and get 80. grams of water, how many grams of oxygen did I use?
- A.
  
  9. g
- B.
  
  80. g
- C.
  
  71. g
- D.
  
  You need more information to answer this question.
5.

What does the 6 in the above symbol represent?
- A.
  
  Mass number
- B.
  
  Atomic number
- C.
  
  Atomic mass
- D.
  
  None of these
6.

What does 12.011 in the above symbol represent?
- A.
  
  Mass number
- B.
  
  Atomic number
- C.
  
  Atomic mass
- D.
  
  None of these.
7.

Which of the following are true about isotopes?
- A.
  
  The number of protons are the same, but the number of neutrons are different.
- B.
  
  The number of protons are the same, but the number of electrons are different.
- C.
  
  The number of neutrons are the same, but the number of electrons are different.
- D.
  
  Two of these are correct.
8.

What is the definition of frequency?
- A.
  
  The energy of a wave.
- B.
  
  How fast the wave is going.
- C.
  
  One full cycle of a wave pattern.
- D.
  
  The number of waves that pass a particular point in a second.
9.

How many valence electrons does Sulfur have?
- A.
  
  2
- B.
  
  4
- C.
  
  6
- D.
  
  8
10.

Use the following equations and Plank's constant (6.626 x 10^-34 Js) to find the amount of energy carried by a photon that has a frequency of 5.00 x 10¹⁴ Hz.c= (wavelength) vE = hv
- A.
  
  7.55 x 10^-21 J
- B.
  
  9.06 x 10^26 J
- C.
  
  3.31 x 10^-19 J
- D.
  
  6.00 x 10^-7 J
11.

Use the following equations and Plank's constant (6.626 x 10^-34 Js) to find the frequency of light that has a wavelength of 440. nmc= (wavelength) vE = hv
- A.
  
  6.82 x 10^14 Hz
- B.
  
  6.82 x 10^16 Hz
- C.
  
  4.52 x 10^-19 Hz
- D.
  
  2.92 x 10^42 Hz
12.

Use the following equations and Plank's constant (6.626 x 10^-34 Js) to find the wavelength of a photon that has the energy of 5.00 x 10^-19 J?c= (wavelength) vE = hv
- A.
  
  7.55 x 10^14 nm
- B.
  
  3.98 x 10^-7 nm
- C.
  
  398 nm
- D.
  
  600. nm
13.

What type of elements are brittle solids?
- A.
  
  Metals
- B.
  
  Nonmetals
- C.
  
  Metalloids
- D.
  
  Transition metals
14.

Where is the f block located on the periodic table.
- A.
  
  The block to the far left.
- B.
  
  The block in the middle.
- C.
  
  The block to the far right.
- D.
  
  The block below the main table.
15.

What is the name of group 2?
- A.
  
  Alkali metals
- B.
  
  Alkaline earth metals
- C.
  
  Halogens
- D.
  
  Noble gases.
16.

What is the periodic trend for electronegativity?
- A.
  
  Increases going left to right and increases going down.
- B.
  
  Increases going left to right and decreases going down.
- C.
  
  Decreases going left to right and increases going down.
- D.
  
  Decreases going left to right and decreases going down.
17.

What is the periodic trend for ionization energy?
- A.
  
  Increases going left to right and increases going down.
- B.
  
  Increases going left to right and decreases going down.
- C.
  
  Decreases going left to right and increases going down.
- D.
  
  Decreases going left to right and decreases going down.
18.

What is ionization energy?
- A.
  
  Electron love.
- B.
  
  The energy that it takes to gain an electron.
- C.
  
  The energy that it takes to remove an electron.
- D.
  
  Energy associated with losing 3 valence electrons
19.

Which of the following is the largest in terms of radius?
- A.
  
  Br-
- B.
  
  Br
- C.
  
  Cl
- D.
  
  F
20.

What element has the electron configuration of:[Ar] 4s2 3d5
- A.
  
  Mn
- B.
  
  Tc
- C.
  
  Br
- D.
  
  Cl
21.

Which block on the period table has can hold 14 electrons
- A.
  
  S
- B.
  
  P
- C.
  
  D
- D.
  
  F
22.

Where are the metals located on the periodic table.
- A.
  
  S block
- B.
  
  D and f block
- C.
  
  Left of the 'staircase'
- D.
  
  More than one of these is correct.
23.

Which of the following are not one of the main parts of the scientific method?
- A.
  
  Hypothesis
- B.
  
  Observation
- C.
  
  Experiment
- D.
  
  All these are correct.
24.

If I have a 1.0 liter jar in which I keep my lost marbles. What would be the mass of the marbles in the jar if each marble takes up approximately 1.3 ml of space and has a mass of 3.5 g. Assume that the marbles use the space efficiently.
- A.
  
  27 kg
- B.
  
  0.27 kg
- C.
  
  2.7 kg
- D.
  
  It is impossible to figure out since the jar is 3 dimensional.
25.

Convert 820 nm to meters.
- A.
  
  8.2 x 10^-9 m
- B.
  
  8.2 x 10^7 m
- C.
  
  8.2 x 10^9 m
- D.
  
  8.2 x 10^-7 m