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HESI ENTRANCE EXAM 2024 FINAL EXAM

HESI ENTRANCE EXAM 2024 FINAL EXAM

HESI ENTRANCE EXAM 2024 FINAL EXAM





What is isotope? - ANSWER-The same element but different number in protons and
neutrons-Mass Number (protons plus neutrons) minus Atomic Number (number of
protons) equals the number of neutrons.

What is radioactive isotope? - ANSWER-Atom whose nucleus undergoes degeneration
and in the process gives off radiation

What is a molecule? - ANSWER-Atoms bonded together to form a chemical unit

What is a compound? - ANSWER-Combining different atoms

What is ionic bond? - ANSWER-Ions with opposite charges attract

What are the most abundant elements of the human body? - ANSWER-Carbon,
Hydrogen, Oxygen, Nitrogen

90% of the human body is composed of just four elements which are: - ANSWER
Carbon, Hydrogen, Oxygen, Nitrogen

The smallest unit of an element that still retains the chemical and physical properties of
the element is called: - ANSWER-Atom

Subatomic particles are: - ANSWER-Protons (positive), Neutrons (neutral) and
Electrons (negative)

All matter is composed of basic substances called - ANSWER-Elements

An atom that tells you how many protons an atom has is called: - ANSWER-Atomic
Number

The number of protons and neutrons is called: - ANSWER-Mass Number

What are ions? - ANSWER-Particle that is electrically charged because it has gained or
lost one or more eletrons

What is a covalent bonds? - ANSWER-Atoms sharing electrons instead of losing or gain
them

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