Bonds

In an ionic bond, ________.

• Two electrons are shared between two atoms

• An electron is shared between two atoms

• An electron is transferred from one atom to another

• A proton is transferred from one atom to another

In a covalent bond, ________.

• Two electrons are shared between two atoms

• An electron is shared between two atoms

• An electron is transferred from one atom to another

• A proton is transferred from one atom to another

Most biological molecules, like DNA or proteins, are held together mostly by ________.

• Ionic bonds

• Covalent bonds

• The weak nuclear force

• Magic

The number of other atoms an atom can bond with (covalently) depends on ________.

• How its outermost electrons are arranged

• How its innermost electrons are arranged

• How many protons and neutrons are in its nucleus

• Whether the sample is pure or not

Sodium chloride is a lattice structure, in which ________.

• Every chloride ion is surrounded by 4 sodium ions

• Every chloride ion is surrounded by 6 sodium ions

• Every chloride ion is surrounded by 8 sodium ions

• Every chloride ion is surrounded by 6 electrons

What are the three subatomic particles that compose atoms?

• Quarks

• Proton

• Neutron

• Electron

• Meson

The center of the atom is called the

• Nucleus

• Nucleolus

• Electron cloud

What particles are located in the nucleus?

• Electron

• Neutron

• Proton

The mass number is found by adding the

• Protons

• Electrons

• Neutrons

The charge of an electron is

• Positive

• Negative

• Neutral