The Atom

___________________ are positively charged particles located in the nucleus of an atom.

• Electrons

• Neutrons

• Protons

• Isotopes

Tags

NGSS.MS-PS1-1

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

Tags

NGSS.MS-PS1-1

Isotopes are atoms of the same element with different numbers of

• electrons

• neutrons

• protons

• nuclei

Tags

NGSS.HS-PS1-8

Protons have a ____________ charge, neutrons have a ____________ charge, and electrons have a ____________ charge.

• positive; negative, neutral

• positive, neutral, negative

• neutral, negative, positive

• negative, neutral, positive

Tags

NGSS.MS-PS1-1

What identifies an atom as a particular element?

• neutrons, or the atomic masses

• electrons, or the atomic numbers

• protons, or the atomic numbers

• the number of valence electrons, or the group number

which of the following does not describe the nucleus of the atom..

• small in volume

• overall positive charge

• contains very little mass of the atom

• contains protons and neutrons within

Our current model, or theory, of the atom...

• Has been developed over time, with contributions from different people.

• Has been developed over time, with all contributions attributed to Einstein.

• Theories have to be held true over time; therefore, our model-theory of the atom has never changed.

• Determined that without seeing an atom a model-theory of an atom will never be valid.

Which of the following statements are true about subatomic particles.

• Electrons have a neutral charge within the nucleus.

• Protons have a positive charge outside the nucleus.

• Neutrons have a negative charge within the nucleus.

• Electrons have a negative charge outside the nucleus.

What accurately describes isotopes of Carbon (Carbon-16, Carbon-12, Carbon-14).

• All isotopes of Carbon have 6 protons.

• All Isotopes of Carbon have the same masses.

• The numbers 12,14,16 represent atomic numbers of those isotopes.

• All isotopes of Carbon have 6 neutrons.

What is the number of particles in a typical Chlorine atom that you find in the periodic table?

• 35 neutrons, 17 protons, 17 electrons

• 18 neutrons, 17 protons, 35 electrons

• 18 neutrons, 17 protons, 17 electrons

• 17 neutrons, 18 protons, 18 electrons