Ionic vs Covalent Bonds

The smallest unit of an element is an ____.

• cell

• atom

• molecule

• compound

Atoms are electrically neutral because they have _____ numbers of both positively charged protons and negatively charged electrons.

• equal

• unequal

Tags

NGSS.MS-PS1-1

An atom can become a charged particle called an ___ if it gains or loses electrons. 

• element

• ion

• proton

• electron

If an atom gains electrons, it acquires more negative charge. As a result, it becomes a _____________ charged ion.

• negatively

• positively

If an atom loses electrons, it loses some of its negative charge and becomes a ________ charged ion.

• negatively

• positively

Ionic bonds create ions out of electrically neutral atoms by the __________ of one or more valence electrons from one atom to another. 

• sharing

• transferring

Which two elements form to create table salt?

• sodium and chlorine

• sodium and carbon

• chlorine and hydrogen

• chlorine and carbon

Tags

NGSS.MS-PS1-1

Covalent bonds occur when atoms ________ pairs of electrons.

• share

• transfer

Tags

NGSS.MS-PS1-1

In __________ bonds, one or more pairs of electrons are shared between atoms.

• covalent

• ionic

Tags

NGSS.MS-PS1-1

In _____ bonds, one or more electrons are transferred from one atom to another.

• covalent

• ionic