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Chemistry Basics Quiz

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Questions and Answers

What determines an atom's chemical identity?

The number of neutrons in the nucleus
The sum of protons in the nucleus (correct)
The number of electrons orbiting the nucleus
The mass number of the atom

Which of the following particles has a positive charge?

Electrons
Protons (correct)
Neutrons
Isotopes

What is the process called when an atom becomes charged due to a loss or gain of electrons?

Excitation
Ionization (correct)
Relaxation
Radiation

Which statement is true about isotopes?

<p>Isotopes have the same atomic number but different mass numbers (B)</p> Signup and view all the answers

What type of motion does the nucleus of an atom exhibit?

<p>It spins about its own axis (B)</p> Signup and view all the answers

Flashcards

Atom

The smallest unit of an element that retains the chemical properties of that element.

Nucleus

The central region of an atom, containing protons and neutrons.

Protons

Particles found in the nucleus of an atom, carrying a positive charge.

Neutrons

Particles found in the nucleus of an atom, having no charge.

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Isotopes

Atoms of the same element that have the same number of protons but a different number of neutrons.