Atoms Question Preview (ID: 39468)


Atomic Structure - Parts Of An Atom And Characteristics Of An Atom.

What type of subatomic particle is found in a cloud surrounding the nucleus of an atom.
a) Negative in charge with mass
b) Negative in charge with no mass
c) Neutral in charge with no mass
d) Neutral in charge with mass

Which of the following describes a proton?
a) Positive charge with mass inside the nucleus
b) Positive in charge with mass outside the nucleus
c) Positive in charge with no mass inside the nucleus
d) Positive in charge with no mass outside the nucleus

What part of the atom identifies it as an element?
a) The number of protons
b) The atomic number
c) The number of electrons
d) The mass of the atom

What is the mass of an atom with 24 protons and 34 neutrons?
a) 24
b) 34
c) 10
d) 58

What is the total number of protons, neutrons, and electrons in an atom of Calcium, Ca with an atomic mass of 42?
a) 42
b) 62
c) 22
d) 124

How many protons, neutrons, electrons are found in an atom of Bromine, Br, with a mass of 80?
a) 35 protons, 80 neutrons, 35 electrons
b) 80 protons, 35 neutrons, 80 electrons
c) 35 protons, 45 neutrons, 35 electrons
d) 35 protons, 35 neutrons, 35 electrons

What is the difference between the number of electrons in an atom of Arsenic, As and the number of electrons in an atom of Aluminum
a) 33
b) 13
c) 46
d) 20

An atom of a certain element has 12 protons, 12 electrons, and a mass of 24. How many neutrons are in this atom?
a) 12
b) 24
c) 36
d) 10

Which of the following describes a neutron?
a) Neutral with no mass outside the nucleus
b) Negative charge with no mass in the nucleus
c) Neutral charge with mass inside the nucleus
d) Negative charge with mass in the nucleus

Which property of the unknown element determines the other elements it reacts with?
a) The total number of particles in the nucleus of the unknown element
b) The total number of neutrons in the unknown element
c) The number of valence electrons in the unknown element
d) The number of protons in the nucleus in the unknown element

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