Which of the following is correct?

Protons are positive, electrons are negative, neutrons are neutral.

Protons are neutral, electrons are negative, neutrons are positive

Protons are negative, electrons are positive, neutrons are neutral

Protons are positive, electrons are neutral, neutrons are negative

The atomic mass of an atom is equal to

number of protons plus number of neutrons

number of protons plus number of electrons

number of electrons plus the number of neutrons

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

Democritus, John Dalton, JJ Thomson, Ernest Rutherford, and Neils Bohr

Neils Bohr, Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

JJ Thomson, John Dalton, Neils Bohr, Ernest Rutherford, & Democritus

John Dalton, Neils Bohr, JJ Thomson, Democritus, & Ernest Rutherford

What were John Dalton three contributions to atomic history?

Believed that atoms of a given element are identical

Hypothesized that the atom is a tiny, hard sphere

Discovered that the atom is mostly empty space

Believed that the universe was made of tiny "uncuttable" particles

What were J. J. Thomson's three contributions to the atomic theory?

Used the cathode ray tube in his discovery

Created the "plum pudding" model of the atom

Discovered the nucleus -did the gold foil experiment

Created a model of the atom with electrons moving around the nucleus in fixed orbits

What is Neils Bohr's contribution to the atomic theory?

Created a model of the atom with electrons moving around the nucleus in a fixed orbits

Discovered that the proton had a positive charge

Believed that atoms of a given element are identical

What were Ernest Rutherford's three contributions to atomic theory?

Discovered that the atom is mostly empty space

Discovered the nucleus- did the gold foil experiment

Discovered that the proton had a positive charge

Used the cathode ray tube in his discovery

atomic history and structure

Authored by Rachel Alldaffer

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Found in the nucleus of an atom. This particle has a positive charge.

Neutron

Proton

Electron

Decepticon

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

Neutron

Proton

Electron

Idontknowatron

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Found in the nucleus of an atom, this subatomic particle has a neutral (or no ) charge

Neutron

Proton

Electron

Whattheheckatron

The atomic number will always be the same as

Mass number and number of protons

Number of neutrons and protons

number of electrons and protons

Number of electrons and neutrons

The periodic table is in order by the

Mass number

Neutron number

Atomic number

APE MAN Number

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The smallest subatomic particle is the

proton

neutron

electron

decepticon

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many protons does indium have?

114

115

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atomic history and structure

Found in the nucleus of an atom. This particle has a positive charge.

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

Found in the nucleus of an atom, this subatomic particle has a neutral (or no ) charge

The atomic number will always be the same as

The periodic table is in order by the

The smallest subatomic particle is the

How many protons does indium have?

What is the atomic mass of barium

How many neutrons does platinum have?

Which part of an atom is used to identify it?

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