Which subatomic particle was the first to be discovered and who was responsible for its discovery?

Electron, discovered by J.J. Thomson

Proton, discovered by Ernest Rutherford

Neutron, discovered by James Chadwick

Photon, discovered by Albert Einstein

Which subatomic particle was discovered during this experiment and which scientist was responsible for its discovery?

Neutron, discovered by James Chadwick

Proton, discovered by Ernest Rutherford

Electron, discovered by J.J. Thomson

Photon, discovered by Albert Einstein

Who were the chemists known for discovering the Noble Gases?

Sir William Ramsay, and Lord Rayleigh

Ernest Rutherford, and Michael Faraday

Dmitri Mendeleev, and Robert Boyle

What is the name of the atomic model attached and which chemist designed it?

Plum Pudding model, designed by J.J. Thomson

Planetary model, designed by Niels Bohr

Nuclear model, designed by Ernest Rutherford

Solid Sphere model, designed by John Dalton

What is the full electron configuration of Cobalt (Co)?

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁷

What does the mass number of an atom represent?

The total number of protons and neutrons in the nucleus

The total number of electrons in the atom

The number of protons in the nucleus

The atomic number of the element

Which of the following statements about isotopes is correct?

Isotopes have the same number of protons but different numbers of neutrons

Isotopes have the same mass number but different atomic numbers

Isotopes have different chemical properties

Isotopes have different numbers of electrons but the same mass number

If an ion has a net charge of 2-, which of the following statements is true?

It has two more electrons than protons

It has two more protons than electrons

It has equal numbers of protons and electrons

It has two fewer neutrons than protons

Which of the following best describes the net charge of a neutral atom?

Depends on the number of neutrons

Which of the following best explains why the average atomic mass of chlorine is not a whole number?

Chlorine has multiple isotopes with different masses and abundances

Chlorine is a mixture of elements

Chlorine atoms have different numbers of electrons

Chlorine atoms have different numbers of protons

Magnesium has three isotopes: Mg-24 (78.99%), Mg-25 (10.00%), and Mg-26 (11.01%). Which calculation would you use to find the average atomic mass of magnesium?

24 × 0.7899 + 25 × 0.1000 + 26 × 0.1101

24 × 0.1101 + 25 × 0.7899 + 26 × 0.1000

24 × 0.3333 + 25 × 0.3333 + 26 × 0.3333

Which of the following statements about periods on the periodic table is correct?

Elements in the same period have the same number of electron shells.

Elements in the same period are all metals.

Elements in the same period have the same number of valence electrons.

Elements in the same period have similar chemical properties.

Chemistry - Practicum 1

Authored by Stephen Sharp

Chemistry

11th Grade

NGSS covered

Used 18+ times

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46 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following Greek philosophers coined the term "Atomos" which is the root word for atom?

Aristotle

Plato

Democritus

Socrates

Pythagoras

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following scientists organized the known elements into a chart according to their atomic weights and even left spots open for future elements that he knew would eventually be discovered?

John Newlands

Dmitri Mendeleev

Henry Moseley

John Dalton

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following scientists conducted the Cathode Ray Experiment?

Robert Milikan

John Dalton

J.J. Thomson

Henry Moseley

Ernest Rutherford

Tags

NGSS.HS-PS2-5

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the significance of the Gold Foil Experiment in reference to atomic structure.

Evaluate responses using AI:

OFF

Tags

NGSS.MS-PS1-1

DRAW QUESTION

3 mins • 1 pt

Draw an atom and label its structures and subatomic particles

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If an atom had a total number of 12 protons, 13 neutrons, and 11 electrons, then what would be the atom's overall charge?

Neutral

Unknown

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the chemist who developed this model?

Niels Bohr

Ernest Rutherford

JJ Thomson

James Chadwick

Tags

NGSS.MS-PS1-1

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Chemistry - Practicum 1

Which of the following Greek philosophers coined the term "Atomos" which is the root word for atom?

Which of the following scientists organized the known elements into a chart according to their atomic weights and even left spots open for future elements that he knew would eventually be discovered?

Which of the following scientists conducted the Cathode Ray Experiment?

Explain the significance of the Gold Foil Experiment in reference to atomic structure.

Draw an atom and label its structures and subatomic particles

If an atom had a total number of 12 protons, 13 neutrons, and 11 electrons, then what would be the atom's overall charge?

What is the name of the chemist who developed this model?

Which subatomic particle was the first to be discovered and who was responsible for its discovery?

Which subatomic particle was discovered during this experiment and which scientist was responsible for its discovery?

Out of the four available options, which element has the LARGEST atomic radius?

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