Atomic Structure/Isotopes

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1 point

Oil drop experiment is associated with

John Dalton

JJ Thomson

Robert Millikan

Ernest Rutherford

1 point

I formed the atomic theory model? Who am I

Dalton

Rutherford

Democritus

Thomson

1 point

Atom has small positive nucleus, remainder is empty space

Robert Millikan

John Dalton

JJ Thomson

Ernest Rutherford

1 point

Discovered the nucleus using his gold foil experiment

Thomson

Rutherford

Democritus

Dalton

1 point

Isotopes have same mass number

True

False

1 point

Carbon-12 has

6 protons, 6 neutrons, 6 electrons

6 protons, 12 neutrons, 6 electrons

12 protons, 6 neutrons, 6 electrons

none of the above

1 point

By conducting experiments and making observations, Dalton figured out that elements combine in random proportions because they’re made of individual atoms.

True

False

1 point

The word atom comes from a Greek word that means indivisible

True

False

1 point

Atoms are the smallest piece of matter that exist

True

False

10.

1 point

I am a Greek Philosopher and I made a mental picture of the atom. I am

Democrititus

Dalton

Thomson

Rutherford

11.

1 point

Before his experiment, Rutherford expected the particles to deflect to the sides of the gold foil

True

False

12.

1 point

Proposed the "plum-pudding" model of atom; discovered the electron

Thomson

Rutherford

Dalton

Democritus

13.

1 point

Chromium-58 has

34 protons, 24 neutrons, 24 electrons

24 protons, 34 neutrons, 24 electrons

24 protons, 24 neutrons, 34 electrons

none of the above

14.

1 point

Described the nature of cathode rays

Ernest Rutherford

Robert Millikan

John Dalton

JJ Thomson

15.

1 point

Isotopes have same number of electrons but different number of neutrons

True

False

16.

1 point

Thomson discovered that there were small particles inside the atom

True

False

17.

1 point

Isotopes have same atomic number

True

False

18.

1 point

Thomson knew the beam was made of particles with a positive charge because it was pulled toward a positive charge

True

False

19.

1 point

Includes elements are composed of atoms

JJ Thomson

Ernest Rutherford

Robert Millikan

John Dalton

20.

1 point

Thomson found that the electrically charged plates affected the direction of a cathode-ray tube beam

True

False

21.

1 point

The gold foil experiment led to the discovery of the nucleus?

True

False

22.

1 point

The 3 subatomic particles of the atom and their respective charges are the protons (1-) electrons (1+) and neutrons (0)

True

False

23.

1 point

Measured charge of the electron

Ernest Rutherford

Robert Millikan

JJ Thomson

John Dalton

24.

1 point

Chromium-63

none of the above

24 protons, 39 neutrons, 24 electrons

24 protons, 24 neutrons, 39 electrons

39 protons, 24 neutrons, 24 electrons

25.

1 point

Isotopes have the same Chemical Symbol

True

False

26.

1 point

What does the number next to the Isotope signify

Atomic number

Atomic mass

Number of Neutrons

non of the above

27.

1 point

Atoms of different elements are exactly alike.

True

False

28.

1 point

In 1897, J. J. Thomson made a discovery that proved the first part of Dalton’s atomic theory was correct

True

False

29.

1 point

The positive particle in the nucleus of an atom

neucleus

mass number

proton

electron

30.

1 point

Isotopes have same number of protons

True

False

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