Exam 1: BIOS251 BIOS 251 Latest

Exam 1: BIOS251 / BIOS 251 (Latest

Update 2025 / 2026) Anatomy and Physiology I with Lab | Questions with Answers | 100% Correct | Grade A - Chamberlain

Question:

A substance made of only one type of atom ( Oxygen, O)

Answer:

Element

Question:

The smallest particle of an element that still has the properties of that

element For example: A hydrogen atom has 1 protons and 1 electron

Answer:

Atom

• / 4

Question:

Atoms held together by electron based interactions called bonds (electrons interact with other atoms to form bonds since they are the outermost subatomic particle)

Answer:

Molecules

Question:

Same element, different number of neutrons

Answer:

Isotope

Question:

Has a positive charge, found in the nucleus

Answer:

Proton

Question:

No charge, found in the nucleus

Answer:

Neutron 2 / 4

Question:

Negative charge, orbits the nucleus

Answer:

Electron

Question:

Forms by the transfer of electrons; between cations (+) and anions (-) is what type of bond?

Answer:

Ionic bonding (metals and nonmetals)

Question:

Sharing electrons between them; similar electron affinity is called what type of bond?

Answer:

Covalent bonding (nonmetals)

• / 4

Question:

Electrons are shared unequally; when one of the atoms in a bond has a higher affinity for electrons than the other (electronegativity) is what type of bond?

Answer:

Polar covalent bond

Question:

When both nonmetals in a covalent bond have similar electron affinity; where the electrons are shared equally is what type of bond?

Answer:

Nonpolar covalent bond

Question:

What is a mixture where a solute is dissolved in a solvent? (salt is the solute, water is the solvent)

Answer:

Solution

• / 4