Solubility, Balancing and Ions

Question 1

Reactants

Answer 1

Reactants are ionic compounds that react with each other “raw materials”

Question 2

Products

Answer 2

The results of a chemical reaction between reactants

Question 3

Chemical Equation

Answer 3

Describes what happens during a chemical reaction
Calcium Carbonate +
Sulfuric Acid =
Calcium Sulphate +
Carbon Dioxide gas +
water

Question 4

Soluble

Answer 4

Dissolves to form a clear substance sugar in water

Question 5

Insoluble

Answer 5

Two substances mixed do not dissolve leave a product know on a precipitate

Question 6

Solubility Table

Answer 6

Tells us which ions can or cannot mix. They are either soluble or insoluble

Question 7

Ionic Compound

Answer 7

Cation + Anion
E.g. Sodium ion + Chloride ion

Question 8

The “old switcheroo”

Answer 8

Balancing ionic compounds method. Refer class notes.

Question 9

Atomic Number

Answer 9

Number of protons and electrons in an element

Question 10

Electron configuration

Answer 10

Arrangement of electrons in shells (onion skins)

Question 11

Balanced equation

Answer 11

Both sides of see-saw have same number of atoms of each element both sides

Question 12

Ion

Answer 12

An atom that has either gained or lost electrons e.g. Na+ means sodium has lost and electron

Question 13

Cation

Answer 13

A positive ion
E.g. Na+,Mg2+

Question 14

Anion

Answer 14

A negative ion
e.g. CI-,l-

Question 15

Monatomic ion

Answer 15

Only one element in ion e.g. K+

Question 16

Polyatomic

Answer 16

Two elements in an ion e.g. Nitrate (NO3)-