Which element is shown in the Bohr model?

Magnesium because it has an atomic number of 12.

Helium because it has 2 valence electrons

Chromium because is has an atomic mass of 24.

Argon because it has 18 total subatomic particles.

Which of these best describes an electron?

It has a negative charge and much less mass than a proton.

It has no charge and about the same mass as a proton.

It has a positive charge and much more mass than a neutron.

It has a negative charge and about the same mass as a neutron.

Which of these best describes one of the subatomic particles that could be found at location X?

It has mass and a positive charge.

It has no mass but a positive charge.

Which of these statements is true about location X?

It has all of the subatomic particles.

It determines an element's reactivity.

What is a limitation (restriction) of the atomic model shown?

The number of neutrons cannot be determined.

The number of electrons cannot be determined.

The number of protons cannot be determined.

The atomic number cannot be determined.

Which statement is true?

A neutron is the same size as a proton and much bigger than an electron.

A proton is the same size as an electron but smaller than a neutron.

An electron is the same size as a proton and bigger than a neutron.

A neutron is the same size as a proton but much smaller than an electron.

Which answer below is correct?

A is negative; B is neutral; C is positive

A is negative; B is positive; C is neutral

A is neutral; B is positive; C is negative

A is positive; B is neutral; C is negative

What is a limitation (restriction) of the model shown?

The model is two dimensional, but atoms are three dimensional.

A is shown as being smaller than B and C.

B and C appear about the same size.

B and C are located in the nucleus.

What is the importance of valence electrons?

They determine how an atom will react (bond) with other atoms.

They determine an atom's identity

They determine whether an atom is a solid, liquid, or gas

They determine whether an atom is a metal, nonmetal, or metalloid

Atom Review

Authored by Jason Guinn

Chemistry

8th Grade

NGSS covered

Used 186+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the basic building blocks of all matter?

Elements

Isotopes

Atoms

Cells

Which of these determines the identity of an atom?

proton

neutron

valence electron

protons and neutrons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these determines the reactivity of an atom?

proton

neutron

electron

protons and neutrons

Which of these is found in the cloud surrounding nucleus?

proton

neutron

electron

protons and neutrons

Which of these IS found in the nucleus?

proton

neutron

electron

protons and neutrons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these has a positive charge?

proton

neutron

electron

protons and neutrons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these has a negative charge?

proton

neutron

electron

protons and neutrons

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Atom Review

What are the basic building blocks of all matter?

Which of these determines the identity of an atom?

Which of these determines the reactivity of an atom?

Which of these is found in the cloud surrounding nucleus?

Which of these IS found in the nucleus?

Which of these has a positive charge?

Which of these has a negative charge?

Which of these has a neutral charge?

Which of these has the least mass at almost 0 amu?

Protons and neutrons are found in the nucleus; therefore the nucleus of the atom would have what overall charge?

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