Ionic and Covalent Bonding

A mixture is different from a compound because each substance in a mixture

• retains its own properties
• changes its electric charge
• forms an ion
• changes from a solid to a liquid
• None

Each molecule of hydrochloric acid, HCl, contains one atom of hydrogen and

• one atom of chlorine
• one atom of oxygen
• two atorms of chlorine
• two atoms fo oxygen
• None

Tags

NGSS.MS-PS1-1

In which substance do the molecules have teh strongest attractions to one another?

• sugar, a solid
• hydrogen, a gas
• sulfuric acid, a liquid
• water, a liquid
• None

Often atoms join so that each atom will have

• an even number of electrons
• an outermost energy level that is full of electrons
• an equal number of protons and electrons
• more electrons than either protons or neutrons
• None

An ionic bond is a bond that forms between

• ions with opposite charges
• atoms with neutral charges
• one atom's nucleus and anothers atom's electrons
• the electrons of two different atoms
• None

In a metallic bond, ten nucleus of one atom is attracted by a nearby atom's

• nucleus
• negative ion
• energy structure
• electrons
• None

Solid ionic compounds have very high melting points because they

• are positively charged
• contain metallic eleements
• are made of elements that are solid at room temperature
• contain charged ions that are locked tightly together
• None

Tags

NGSS.HS-PS1-3

The anion formed from an oxygen atom is called a(n)

• oxygen ion
• oxide ion
• carbon dioxide
• nitrous oxide
• None

Fe2O3 is named iron(III) oxide because it cotains

• three oxygen atorms
• Fe3+ ions
• three iron atoms
• O3+ ions
• None

Tags

NGSS.MS-PS1-1

The name of the compound with the formula CuBr2 would be written as

• copper(II) bromide
• copper(I) bromide
• copper bromine
• copper(III) bromide
• None