Which statement about subatomic particles is NOT true?
A.) Protons and neutrons have almost the same mass.
B.) Protons and electrons have opposite charges.
C.) Unlike protons and electrons, neutrons have no charge.
D.) Protons and neutrons have the same charge.
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How many neutrons are in the isotope carbon-14?
A.) 6
B.) 8
C.) 12
D.) 14
1. A
2. C
3. D
To determine which statement about subatomic particles is NOT true, let's analyze each statement:
A.) Protons and neutrons have almost the same mass.
This statement is true. Protons and neutrons indeed have similar masses. Both are approximately 1 atomic mass unit (amu) in mass.
B.) Protons and electrons have opposite charges.
This statement is true. Protons have a positive charge, while electrons have a negative charge. They attract each other due to their opposite charges.
C.) Unlike protons and electrons, neutrons have no charge.
This statement is true. Neutrons are electrically neutral, meaning they have no charge. Unlike protons and electrons, they do not possess any electrical charge.
D.) Protons and neutrons have the same charge.
This statement is NOT true. Protons have a positive charge, while neutrons are electrically neutral. They differ in their charge, with protons being positively charged and neutrons having no charge.
Based on the analysis, the statement that is NOT true is option D.) Protons and neutrons have the same charge.