SRA #3

A student creates a model to compare the locations and charges of electrons, protons, and neutrons. Which model accurately represents each subatomic particle?

• A
• B
• C
• D

Which model accurately shows an atom with 4 protons, 4 electrons, and 3 neutrons?

• A
• B
• C
• D

What charge should be placed in the table for an electron?

• -1
• 0
• +1
• +2

Which particles should be placed inside the nucleus?

• protons only
• electrons only
• electrons and protons
• neutrons and protons

Where should the student place a proton in the model?

• inside the nucleus
• on either of the two orbits
• between the two orbits
• between the first orbit and the nucleus

What is true about the number of neutrons for the atom to keep its overall charge at zero?

• The number of neutrons does not affect the overall charge of the atom.
• The number of neutrons is always equal to the number of protons.
• The number of neutrons must be greater than the number of electrons.
• The number of neutrons must be less than the number of protons.

Which two particles are classified as electrons?

• V
• W
• X
• Y
• Z

Which statement is true about the nucleus of an atom?

• The nucleus contains electrons and neutrons, and it has a negative net charge.
• The nucleus contains electrons and protons and it has a neutral net charge.
• The nucleus contains protons and neutrons, and it has a neutral net charge.
• The nucleus contains protons and neutrons, and it has a positive net charge.

Which subatomic particle is not in an atom?

• electron
• ion
• neutron
• proton

What is a correct description of the charge in this atom?

• W is negatively charged, and X is neutral with no charge.
• W is negatively charged, and X is positively charged.
• W is neutral with no charge, and X is negatively charged.
• W is positively charged, and X is negatively charged.