Water and dissolution

Question 1

What is the formula for water?

Answer 1

H2O= 2H^+ + O^2-

Question 2

What is gaseous state of water?

Answer 2

steam

Question 3

What is waters liquid phase?

Answer 3

water

Question 4

What is waters solid phase?

Answer 4

ice

Question 5

What do water molecules act like?

Answer 5

charged particles

Question 6

What is dissolution?

Answer 6

process where a solute in gaseous, liquid, or solid phase dissolves in a solvent to form a solution

Question 7

What type of bond is water?

Answer 7

covalent bond

Question 8

What is the electron distribution of oxygen like?

Answer 8

6 in outer shell two bottom sites are full top is where interaction can take place

Question 9

What side of the water molecule will be positive and which side is negative?

Answer 9

positive charge around where hydrogen is bonded (cations)

Question 10

How will water molecules arrange themselves based on charge in certain areas of atom?

Answer 10

Positive side will be close to negative side

Question 11

What type of bond will form between water molecules?

Answer 11

hydrogen bond (between hydrogen and oxygen of different molecules)

Question 12

How much weaker are hydrogen binds than covalent?

Answer 12

50%

Question 13

What do hydrogen bonds do to water?

Answer 13

don’t hold them together as solid but keep them closely packed to remain in liquid form

Question 14

What happens when we freeze water?

Answer 14

space out the molecules allows all bonds to be fulfilled making it expand and be less dense

Question 15

What is the structure of ice like?

Answer 15

symmetrical hexagonal structure

Question 16

Why is water called the universal solvent?

Answer 16

it is able to dissolve ionic compounds

Question 17

What are the 3 groups of dissolution?

Answer 17

Simple dissolution
Insoluble hydroxides
Soluble oxy-anions

Question 18

What is simple dissolution?

Answer 18

simple soluble cations (i.e., sodium chloride)

Question 19

Why is NaCl a simple dissolution?

Answer 19

it doesn’t have strong pull of electro static forces charge of water molecules able to keep it separate and liquid

Question 20

What is an example of an insoluble hydroxide?

Answer 20

Al(OH)3

Question 21

What does the high charge of aluminium do to water molecules?

Answer 21

only needs 3 water molecules while knocking off a hydrogen from each one Leaving (OH) which has a negative charge of 1

Question 22

What is an example of a soluble oxy-anion?

Answer 22

SO4^-2

Question 23

What does silicon with 6+ charge do to water molecules?

Answer 23

Just bonds with oxygen as its high charge “kicks” out hydrogens

Question 24

What can the ionic potentials of molecules be used to predict?

Answer 24

solubility