Multiple Choice
How many protons and electrons are present in a neutral atom of vanadium (V)?
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2. Atoms & Elements
The Atom
Multiple Choice
Which of the following is the smallest chemical unit that retains the properties of a pure substance?
A
Atom
B
Ion
C
Proton
D
Molecule
Verified step by step guidance1
Understand the question: It asks for the smallest chemical unit that retains the properties of a pure substance.
Recall definitions: An atom is the smallest unit of an element that maintains the chemical properties of that element.
Consider ions: Ions are atoms or molecules with a charge, but they may not represent the pure substance itself since they are charged species.
Consider protons: Protons are subatomic particles within an atom and do not retain the properties of the substance alone.
Consider molecules: Molecules are groups of atoms bonded together and represent compounds or elements, but atoms are smaller and still retain elemental properties.
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