Chemistry Chemistry Practice Problems Solutions Library

Subatomic Particles Solutions Library

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172 solutions

Subatomic Particles

Q. All matter is made up of atoms. An atom has a nucleus consisting of positively charged protons and unchanged neutrons. Negatively charged electrons...

Solved • Feb 8, 2021

Subatomic Particles

Q. What does the mass number tell us?

Solved • Nov 16, 2020

Subatomic Particles

Q. What predicts the element to which an atom belongs?

Solved • Nov 12, 2020

Subatomic Particles

Q. Which of the following descriptions of a subatomic particle is correct? A. A neutron has no charge and its mass is negligible B. A neutron has a po...

Solved • Nov 9, 2020

Subatomic Particles

Q. Part D. In the PhET simulation window, click the green + symbols to expand the Mass Number tab. Drag protons, neutrons, and electrons from their re...

Solved • Jul 1, 2020

Subatomic Particles

Q. Part D. An atom of iron is represented by 5726Fe. How many neutrons are in the nucleus of this atom?Express your answer as an integer.The atomic nu...

Solved • Jul 1, 2020

Subatomic Particles

Q. Part C. An atom has a mass number of 32 and 17 neutrons. What is the atomic number of this atom?Express your answer as an integer.The atomic number...

Solved • Jul 1, 2020

Subatomic Particles

Q. Part B. The atomic number of oxygen is 8. What is the mass number of an oxygen atom with 7 neutrons?Express your answer as an integer. The atomic n...

Solved • Jul 1, 2020

Subatomic Particles

Q. Part A. Specify the number of protons, neutrons, and electrons in the neutral atom iron-56.Enter your answers as integers separated by commas.Atoms...

Solved • Jul 1, 2020

Subatomic Particles

Q. How many neutrons are found in one atom of 36Cl? Express your answer numerically.Periodic table The periodic table lists two main numbers for each ...

Solved • Jun 30, 2020

Subatomic Particles

Q. What are the differences in the compositions of the following pairs of atomic nuclei? 21083Bi, 20982Pba) 21083Bi has one fewer proton and one more ...

Solved • Jun 29, 2020

Subatomic Particles

Q. Which element contains 51 protons in its nucleus?(a) manganese (b) chromium(c) fermium(d) antimony

Solved • Jun 25, 2020

Subatomic Particles

Q. The superscript preceding each hydrogen atomic symbol (H) represents which of the following?

Solved • Jun 16, 2020

Subatomic Particles

Q. Which subatomic particle has the least mass?A) electronB) nucleusC) neutronD) proton

Solved • Jun 15, 2020

Subatomic Particles

Q. Which statements about subatomic particles are true? A. If an atom has an equal number of protons and electrons, it will be charge-neutral. B. Elec...

Solved • Jun 15, 2020

Subatomic Particles

Q. How many protons, neutrons, and electrons are in a neutral atom of sodium?

Solved • Jun 15, 2020

Subatomic Particles

Q. Which of the following statements is false?a) Cations are formed when neutral atoms lose electrons to become positively charged.b) Anions are forme...

Solved • May 1, 2020

Subatomic Particles

Q. An atom of iron has the atomic number 26. This means that: a) it has an atomic mass of 26. b) it has 26 protons. c) it has 26 electrons. d) it has ...

Solved • Apr 28, 2020

Subatomic Particles

Q. How many neutrons are found in one atom of 16N? Express your answer numerically.

Solved • Apr 28, 2020

Subatomic Particles

Q. How  many protons and neutrons are present in an atom of ?

Solved • Apr 28, 2020

Subatomic Particles

Q. Complete the table below, using the diagram of an atom shown at right.

Solved • Mar 12, 2020

Subatomic Particles

Q. How many neutrons are present in a nucleus of iron-56?A) 56B) 26C) 28D) 30E) 20

Solved • Nov 25, 2019

Subatomic Particles

Q. How many neutrons are there in the nucleus of a 232Th atom?a. 232b. 90c. 81d. 151e. 142

Solved • Nov 21, 2019

Subatomic Particles

Q. What element does “X” represent in the following symbol? a. Mercury (Hg)b. Chlorine (Cl)c. Rhodium (Rh)d. Scandium (Sc)e. Bromine (Br)

Solved • Sep 17, 2019

Subatomic Particles

Q. How many protons (p) and neutrons (n) are in an atom of strontium-90? A) 38 p, 90 n B) 52 p, 38 n C) 90 p, 38 n D) 38 p, 52 n

Solved • Sep 13, 2019

Subatomic Particles

Q. An atom of oxygen has an atomic number of 8 and a mass number of 18. How many of each type of subatomic particle does it contain?

Solved • Aug 26, 2019

Subatomic Particles

Q. What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?

Solved • Aug 26, 2019

Subatomic Particles

Q. If an atom contains 3 protons, 4 neutrons, and 3 electrons, its mass number is ___If an atom contains 11 protons and 12 neutrons, its atomic number...

Solved • Aug 25, 2019

Subatomic Particles

Q. How many electrons are in gold?

Solved • Aug 25, 2019

Subatomic Particles

Q. How many neutrons does aluminum have?

Solved • Aug 25, 2019

Subatomic Particles

Q. How many neutrons does neon have?

Solved • Aug 25, 2019

Subatomic Particles

Q. What is the number of neutrons in phosphorus?

Solved • Aug 25, 2019

Subatomic Particles

Q. How many neutrons does nitrogen have?

Solved • Aug 25, 2019

Subatomic Particles

Q. If an atom has an atomic number of 9 and an atomic mass number of 19, how many protons, neutrons, and electrons does it have?

Solved • Aug 7, 2019

Subatomic Particles

Q. If an atom has an atomic number of 15 and an atomic mass of 31, how many protons, neutrons and electrons does the atom contain?

Solved • Aug 7, 2019

Subatomic Particles

Q. What is the mass number and the atomic number of Boron-11?

Solved • Aug 7, 2019

Subatomic Particles

Q. How many protons, neutrons, and electrons does a magnesium atom with a mass number of 25 contain?

Solved • Aug 7, 2019

Subatomic Particles

Q. What is the mass number of an ion with 104 electrons, 157 neutrons, and a +1 charge?

Solved • Aug 7, 2019

Subatomic Particles

Q. How many neutrons does Uranium-238 have if it has 92 protons?

Solved • Aug 7, 2019

Subatomic Particles

Q. How many protons, neutrons and electrons are in calcium?

Solved • Aug 7, 2019

Subatomic Particles

Q. How many protons, neutrons, and electrons are present in an atom of aluminum-27?

Solved • Aug 7, 2019

Subatomic Particles

Q. How many protons, neutrons, and electrons are in a neutral atom of sodium?

Solved • Aug 7, 2019

Subatomic Particles

Q. What is the mass number of an ion with 109 electrons, 159 neutrons, and a +1 charge?

Solved • Aug 5, 2019

Subatomic Particles

Q. Specify the number of protons, neutrons, and electrons in the neutral atom chromium-52.

Solved • Aug 2, 2019

Subatomic Particles

Q. Define A, Z, and X   in the following notation used to specify a nuclide: ZA X.

Solved • Jan 8, 2019

Subatomic Particles

Q. Identify the following elements. 80202 X

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the following elements. 83209X

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in each of the following atoms? 58142 Ce

Solved • Oct 25, 2018

Subatomic Particles

Q. Consider an atom of 63Cu. How many protons, neutrons, and electrons does this atom contain?

Solved • Oct 25, 2018

Subatomic Particles

Q. Consider an atom of 10B.How many protons, neutrons, and electrons does this atom contain?

Solved • Oct 25, 2018

Subatomic Particles

Q. Consider an atom of 10B.What is the symbol of the atom obtained by adding one proton to 10B?

Solved • Oct 25, 2018

Subatomic Particles

Q. Consider an atom of 10B.What is the symbol of the atom obtained by adding one neutron to 10B?

Solved • Oct 25, 2018

Subatomic Particles

Q. To how many significant figures would you need to express the mass of an oxygen-16 atom in amu to notice the change in mass that occurs when it gai...

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of these atoms has the largest number of neutrons in the nucleus?(a) 148Eu (b) 157Dy (c) 149Nd (d) 162Ho (e) 159Gd

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols and give the number of protons and neutrons in each.Identify the element 3374 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols. Identify the element 53127 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols and give the number of protons and neutrons in each. Identify the element 63152 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols.Identify the element 83209 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols.Give the number of protons and neutrons in 3374 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Give the number of protons and neutrons in 53127 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Identify the element represented by each of the following symbols and give the number of protons and neutrons in each.Give the number of protons an...

Solved • Oct 25, 2018

Subatomic Particles

Q. Give the number of protons and neutrons in 83209 X.

Solved • Oct 25, 2018

Subatomic Particles

Q. Determine whether each of the following statements is true or false.Every atom of a given element has the same number of protons.

Solved • Oct 25, 2018

Subatomic Particles

Q. Determine whether each of the following statements is true or false.The number of electrons in an atom equals the number of neutrons in the atom.

Solved • Oct 25, 2018

Subatomic Particles

Q. Determine whether each of the following statements is true or false. If false, correct the statement to make it true.(a) The nucleus has most of th...

Solved • Oct 25, 2018

Subatomic Particles

Q. Define atomic number and mass number.

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of these can vary without changing the identity of the element?(a) atomic number(b) mass number

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?40 Ar,

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?65 Zn,

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?70 Ga,

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?80Br,

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?184 W,

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons, neutrons, and electrons are in the following atoms?243Am.

Solved • Oct 25, 2018

Subatomic Particles

Q. Which is the least massive among the main subatomic particles that make up the atom?

Solved • Oct 25, 2018

Subatomic Particles

Q. Answer the following questions:What is the charge, in units of the electronic charge, of neutron?

Solved • Oct 25, 2018

Subatomic Particles

Q. Answer the following questions:What is the charge, in units of the electronic charge, of electron?

Solved • Oct 25, 2018

Subatomic Particles

Q. Determine whether each of the following statements is true or false.The nucleus has most of the mass and comprises most of the volume of an atom.

Solved • Oct 25, 2018

Subatomic Particles

Q. Answer the following questions:What is the charge, in units of the electronic charge, of proton?

Solved • Oct 25, 2018

Subatomic Particles

Q. Answer the following questions:Among the main subatomic particles that make up the atom, which is the most massive?

Solved • Oct 25, 2018

Subatomic Particles

Q. If an atom has 15 protons, how many electrons does it have?

Solved • Oct 25, 2018

Subatomic Particles

Q. How many protons and neutrons are present in an atom of 1939K?

Solved • Oct 25, 2018

Subatomic Particles

Q. You may want to reference (Pages 56 - 61)Section 2.6 while completing this problem. (Determine the number of neutrons and number of protons)1940 K

Solved • Oct 25, 2018

Subatomic Particles

Q. You may want to reference (Pages 56 - 61)Section 2.6 while completing this problem. (Determine the number of neutrons and number of protons)88226 Ra

Solved • Oct 25, 2018

Subatomic Particles

Q. You may want to reference (Pages 56 - 61)Section 2.6 while completing this problem. (Determine the number of neutrons and number of protons)4399 Tc

Solved • Oct 25, 2018

Subatomic Particles

Q. You may want to reference (Pages 56 - 61)Section 2.6 while completing this problem. (Determine the number of neutrons and number of protons)1533 P

Solved • Oct 25, 2018

Subatomic Particles

Q. Uranium-235 is used in nuclear fission.Determine the number of protons and the number of neutrons in uranium-235.

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of the following statements about subatomic particles are true, and which are false?a. Protons and electrons have charges of the same magnitu...

Solved • Oct 25, 2018

Subatomic Particles

Q. How many electrons does it take to the equal the mass of a proton?

Solved • Oct 25, 2018

Subatomic Particles

Q. The mole is defined as the amount of a substance containing the same number of particles as exactly 12 grams of C-12. The amu is defined as 1/12 of...

Solved • Oct 25, 2018

Subatomic Particles

Q. Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon, rather than 1 mol of 12C.Find the atomic mass of ...

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of the following statements about subatomic particles are true?If an atom has an equal number of protons and electrons, it will be charge-neu...

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of the following statements about subatomic particles are true?Electrons are attracted to protons.

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of the following statements about subatomic particles are true?Electrons are much lighter than neutrons.

Solved • Oct 25, 2018

Subatomic Particles

Q. Which of the following statements about subatomic particles are true?Protons have twice the mass of neutrons.

Solved • Oct 25, 2018

Subatomic Particles

Q. A helium nucleus has two protons and two neutrons.How many electrons would it take to equal the mass of a helium nucleus?

Solved • Oct 25, 2018

Subatomic Particles

Q. On a dry day, your body can accumulate static charge from walking across a carpet or from brushing your hair.If your body develops a charge of -14 ...

Solved • Oct 25, 2018

Subatomic Particles

Q. Give the basic properties (mass and charge) of the proton.

Solved • Oct 25, 2018

Subatomic Particles

Q. Give the basic properties (mass and charge) of the neutron.

Solved • Oct 25, 2018

Subatomic Particles

Q. Give the basic properties (mass and charge) of the electron.

Solved • Oct 25, 2018

Subatomic Particles

Q. What defines an element?a) The number of neutrons in the nucleus defines the element. b) The number of protons in the nucleus defines the element.

Solved • Oct 25, 2018