definitions

Question 1

Hydrates

Answer 1

A hydrate is a chemical compound that contains water molecules bonded within its crystal structure.

Question 2

Anhydrate

Answer 2

the substance that remains after the water is removed from a hydrate

Question 3

Dehydration

Answer 3

Dehydration is the process of removing water from a hydrate to form an anhydrate.

Question 4

Mole

Answer 4

unit in chemistry used to measure the amount of substance. It is the amount of substance that contains exactly 6.022 × 10²³ particles (Avogadro’s number) of that substance.

Question 5

How to name a hydrate

Answer 5

1. name ionic compound (ex. magnesium sulfate)
   2.name the water portion = hydrate, and add a prefix to indicate the # of H2O attached

Question 6

Define delocalized electrons

Answer 6

present in metals and other specific compounds, where the valence electrons are delocalized and move freely throughout the entire metal structure.

Question 7

does having delocalized electrons equate high mp/bp

Answer 7

→ More delocalized electrons = strong metallic bonds = higher melting and boiling points.

Question 8

define coordinate covalent/ dative covalent bond

Answer 8

In a coordinate covalent bond, only one atom gives both electrons to share.

The other atom doesn’t bring any electrons — it just accepts the pair.
* usually contains electron-deficient atoms that need to “borrow” electrons

Question 9

define metallic bonding

Answer 9

It involves positive metal ions surrounded by a sea of delocalized electrons that are free to move throughout the structure

Question 10

what are delocalized electrons

Answer 10

just valence electrons in the metal’s ground state