Question

classify each statement about subatomic particles as true or false.
true
false
answer bank
protons and electrons have approximately the same mass.
protons and neutrons have approximately the same mass.
atoms of different elements can have the same number of protons.
if an atom has more electrons than protons, it will be negatively charged.

Explanation:

To solve this, we analyze each statement based on subatomic particle properties:

1. "Protons and electrons have approximately the same mass."

• Protons have a mass of ~\(1.67 \times 10^{-27}\) kg, while electrons have a mass of ~\(9.11 \times 10^{-31}\) kg (protons are ~1800x more massive).
• Classification: False

2. "Protons and neutrons have approximately the same mass."

• Protons and neutrons both have masses of ~\(1.67 \times 10^{-27}\) kg (neutrons are slightly heavier, but “approximately the same” holds).
• Classification: True

3. "Atoms of different elements can have the same number of protons."

• The number of protons defines an element (atomic number). Different elements have different atomic numbers (unique proton counts).
• Classification: False

4. "If an atom has more electrons than protons, it will be negatively charged."

• Protons are positive, electrons are negative. More electrons (negative charge) than protons (positive charge) means net negative charge.
• Classification: True

Final Categorization:

• True:
• Protons and neutrons have approximately the same mass.
• If an atom has more electrons than protons, it will be negatively charged.

• False:
• Protons and electrons have approximately the same mass.
• Atoms of different elements can have the same number of protons.

Answer:

To solve this, we analyze each statement based on subatomic particle properties:

1. "Protons and electrons have approximately the same mass."

• Protons have a mass of ~\(1.67 \times 10^{-27}\) kg, while electrons have a mass of ~\(9.11 \times 10^{-31}\) kg (protons are ~1800x more massive).
• Classification: False

2. "Protons and neutrons have approximately the same mass."

• Protons and neutrons both have masses of ~\(1.67 \times 10^{-27}\) kg (neutrons are slightly heavier, but “approximately the same” holds).
• Classification: True

3. "Atoms of different elements can have the same number of protons."

• The number of protons defines an element (atomic number). Different elements have different atomic numbers (unique proton counts).
• Classification: False

4. "If an atom has more electrons than protons, it will be negatively charged."

• Protons are positive, electrons are negative. More electrons (negative charge) than protons (positive charge) means net negative charge.
• Classification: True

Final Categorization:

• True:
• Protons and neutrons have approximately the same mass.
• If an atom has more electrons than protons, it will be negatively charged.

• False:
• Protons and electrons have approximately the same mass.
• Atoms of different elements can have the same number of protons.