F Kolias
Quiz by , created more than 1 year ago

Explain what makes elements and isotopes different from one another Calculate the number of neutrons in an atom Calculate the atomic mass of an element Explain why chemists use the periodic table

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F Kolias
Created by F Kolias about 9 years ago
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Atomic Structure

Question 1 of 12

1

Negatively charged subatomic particles.

Select one of the following:

  • Proton

  • Neutron

  • Electron

  • Nucleus

Explanation

Question 2 of 12

1

Subatomic particle with no charge.

Select one of the following:

  • Proton

  • Neutron

  • Electron

  • Nucleus

Explanation

Question 3 of 12

1

Positively charged subatomic particle.

Select one of the following:

  • Proton

  • Neutron

  • Electron

  • Nucleus

Explanation

Question 4 of 12

1

Central dense core of an atom responsible for its mass.

Select one of the following:

  • Proton

  • Neutron

  • Electron

  • Nucleus

Explanation

Question 5 of 12

1

Philosopher who was among the first to suggest the existence of atoms.

Select one of the following:

  • Bohr

  • Rutherford

  • Dalton

  • Democritus

Explanation

Question 6 of 12

1

The mass of an electron is equal to the mass of a neutron.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 12

1

Rutherford’s gold foil experiment proved that atoms are mostly empty space with a dense, positively charged nucleus.

Select one of the following:

  • True
  • False

Explanation

Question 8 of 12

1

The mass number of an atom is equal to

Select one of the following:

  • Weighted average of masses of all isotopes of an element

  • Protons plus Neutrons

  • Number of Neutrons

  • Number of Protons

Explanation

Question 9 of 12

1

The atomic mass of an atom is equal to

Select one of the following:

  • Weighted average of masses of all isotopes of an element

  • Protons plus Neutrons

  • Number of Neutrons

  • Number of Protons

Explanation

Question 10 of 12

1

An isotope of neon has a mass number of 22. How many neutrons in this isotope?

Select one of the following:

  • 22

  • 20

  • 12

  • 10

Explanation

Question 11 of 12

1

An isotope of lead has a mass number of 206. How many protons in this isotope?

Select one of the following:

  • 82

  • 124

Explanation

Question 12 of 12

1

Calculate the atomic mass of an atom with the following isotope data:
Mass : Abundance
36.00 : 75.77%
37.00 ; 24.23%

Select one of the following:

  • 36.14

  • 36.68

  • 36.48

  • 36.24

Explanation

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