Deck 2: Structure of the Atom

Question 1

When an atom becomes negatively or positively charged it is usually due to a change in the number of:

A) protons
B) electrons
C) neutrons
D) all of the above

Answer 1

electrons

Question 2

The component of the nucleus that has a positive charge and mass is the:

A) electron
B) neutron
C) proton
D) none of the above

Answer 2

proton

Question 3

The most commonly known modern atomic theory was developed by:

A) Bohr
B) Rutherford
C) Dalton
D) Thomson

Answer 3

Bohr

Question 4

If an atom has the same number of electrons and protons it will:

A) have a negative charge
B) have a positive charge
C) be electrically neutral
D) none of the above

Question 5

If an atom has more protons than electrons it will:

A) have a negative charge
B) have a positive charge
C) be electrically neutral
D) have neither a positive not negative charge

Question 6

The "plum pudding model" is associated with:

A) Bohr
B) Rutherford
C) Dalton
D) Thomson

Question 7

The earliest atomic theory is generally associated with:

A) Bohr
B) Leucippus
C) Democritus
D) Dalton

Question 8

The component of the nucleus that has mass but no electrical charge is the:

A) electron
B) neutron
C) proton
D) none of the above

Question 9

The fundamental component of the atom that has the smallest mass is the:

A) electron
B) neutron
C) proton
D) none of the above

Question 10

The three fundamental particles of the atom are the:

A) element,nucleus,and electron
B) electron,nucleus,and proton
C) neutron,electron,and proton
D) nucleus,proton,and neutron

Question 11

The force that holds the protons and neutrons together in the nucleus is the:

A) binding energy
B) nuclear energy
C) atomic energy
D) proton/neutron energy

Question 12

The word atom is derived from the Greek word atomos,meaning:

A) nuclear
B) small
C) indivisible
D) invisible

Question 13

A negative ion is:

A) an electron
B) an atom with more protons than electrons
C) an atom with more neutrons that electrons
D) an atom with more electrons than protons

Question 14

If an atom has more electrons than protons it will:

A) have a negative charge
B) have a positive charge
C) be electrically neutral
D) have neither a positive not negative charge

Question 15

Discovery of the electron is attributed to:

A) Dalton
B) Bohr
C) Thomson
D) Rutherford

Question 16

The earliest atomic theory based on the arrangement of the solar system is attributed to:

A) Bohr
B) Rutherford
C) Dalton
D) Thomson

Question 17

A positive ion is:

A) a proton
B) an atom with more protons than electrons
C) an atom with more neutrons that electrons
D) an atom with more electrons than protons

Question 18

The atomic nucleus contains:

A) protons and neutrons
B) protons and electrons
C) electrons and neutrons
D) all of the above

Question 19

In the early 1800s English chemist John Dalton theorized that:

A) elements form compounds
B) atoms are unique to each element in size and mass
C) a chemical reaction results from atoms being rearranged
D) all of the above

Question 20

The mass of an atom is primarily due to the mass of the:

A) neutrons
B) nucleus
C) electrons
D) protons

Question 21

For the chemical element sodium (²²₁₁Na),the atomic mass number is:

A) 11
B) 22
C) 33
D) none of the above

Question 22

The electrons stay in orbit around the nucleus because of:

A) their attraction to the protons
B) their attraction to the neutrons
C) their attraction to the other electrons
D) all of the above

Question 23

The electron binding energy is stronger when:

A) there are more protons and the electron is closer to the nucleus
B) there are fewer protons and the electron is closer to the nucleus
C) there are fewer protons and the electron is farther from the nucleus
D) there are more protons and the electron is farther from the nucleus

Question 24

The number of protons in an atom's nucleus is reflected in its:

A) atomic number
B) atomic mass number
C) element
D) compound

Question 25

Except for the K shell,the maximum number of electrons that can be in the outermost shell of an atom is:

A) 4
B) 8
C) 16
D) 32

Question 26

If a particle strikes an atom with the same amount of energy as the atom's binding energy:

A) the atom will become a positive ion
B) the atom will become a negative ion
C) it can split the atom
D) it can fuse the atom

Question 27

For the chemical element sodium (²²₁₁Na),the atomic number is:

A) eleven
B) twenty two
C) thirty three
D) none of the above

Question 28

The L shell can hold _______ electrons.

A) 1
B) 2
C) 4
D) 8

Question 29

In a neutral atom,the atomic number indicates the number of:

A) protons
B) neutrons
C) electrons
D) A and C

Question 30

An atom of helium (⁴₂He)has:

A) two protons
B) four protons
C) four neutrons
D) four electrons

Question 31

How many electrons does a neutral atom of carbon (¹²₆C)have?

A) 3
B) 6
C) 12
D) 18

Question 32

Two or more atoms that bond together form a(n):

A) atomic number
B) atomic mass number
C) element
D) compound

Question 33

The electron binding energy depends on:

A) how close it is to the nucleus
B) how many neutrons there are in the nucleus
C) how many protons there are in the nucleus
D) A and C

Question 34

The number of protons and neutrons in the atom's nucleus is the:

A) atomic number
B) atomic mass number
C) element
D) compound

Question 35

How many neutrons does ⁷₃Li (lithium)have?

A) 3
B) 4
C) 7
D) 10

Question 36

The electron shell closest to the nucleus is lettered:

A) "E"
B) "H"
C) "K"
D) "M"

Question 37

The simplest form of the substances that form matter is the:

A) atomic number
B) atomic mass number
C) element
D) compound

Question 38

The N shell can hold _______ electrons.

A) 4
B) 8
C) 32
D) 64

Question 39

An atom of oxygen (¹⁶₈O)has:

A) eight protons
B) eight neutrons
C) eight electrons
D) all of the above

Question 40

If an atom has 15 electrons,which will be the outermost shell? 

A) "L"
B) "M"
C) "N"
D) "O"

Question 41

A compound consists of:

A) at least two molecules
B) at least two elements
C) at least two different materials
D) all of the above

Question 42

Atoms with the same number of neutrons but different number of protons are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 43

The periodic table of elements classifies by period and group.The group is the:

A) row
B) column
C) period
D) type of element

Question 44

Electron shells are the hard coating around the electron.

Question 45

The periodic table of elements classifies by period and group.The period is the:

A) row
B) column
C) group
D) type of element

Question 46

Atoms in each group have the same number of:

A) electrons in the outermost shell
B) atomic mass number
C) electrons
D) electron shells

Question 47

Atoms with different atomic numbers but the same atomic mass numbers are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 48

Each electron shell has a specific limit to the amounts of electrons it can hold.

Question 49

The outermost shell of an atom can hold fewer than 8 electrons.

Question 50

Atoms with the same atomic number but different atomic mass numbers are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 51

Atoms with different number of protons but the same combined number of protons and neutrons are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 52

Elements can only occur naturally.

Question 53

Atoms with the same number of protons but different number of neutrons are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 54

The electrons rotate around the nucleus at a single energy level.

Question 55

Atoms with the same atomic number and atomic mass number but have different energy within their nuclei are:

A) isotopes
B) isotones
C) isobars
D) isomers

Question 56

Atoms in each period have the same number of:

A) electrons in the outermost shell
B) atomic mass number
C) electrons
D) electron shells

Question 57

Each element has an unchanging number of protons.

Question 58

The atoms of the elements at the top of the periodic table of elements are the most complex.

Question 59

When the bond between two atoms is due to their sharing an outer-shell electron,this is called a:

A) molecular bond
B) ionic bond
C) compounding bond
D) covalent bond

Question 60

When the bond between two atoms is due to one atom giving up an electron and the other atom gaining an electron,it is called a:

A) molecular bond
B) ionic bond
C) compounding bond
D) covalent bond

Question 61

An ionic bond results in an electrically charged molecule or compound.

Question 62

All compounds are molecules and all molecules are compounds.

Question 63

In the middle of the periodic table of elements there are elements that don't fit exactly into one of the eight groups.