chemistry exam revison

Question 1

WHAT ARE ALKYNES AND WHAT IS ITS FORMULA

Answer 1

HYRDOCARBONS THAT CONTAIN A TRIPLE BOND

CnH2n-2

Question 2

WHAT ARE ALKENES AND WHAT IS ITS FORMULA

Answer 2

HYDROCARBONS THAT CONTAIN A DOUBLE BOND

CnH2n

Question 3

WHAT ARE ALKANES AND WHAT IS ITS FORMULA

Answer 3

HYDROCARBONS THAT ONLY CONTAIN SINGLE BONDS BETWEEN CARBON ATOMS
CnH2n+2

Question 4

WHAT IS A SINGLE COVALENT BOND

Answer 4

WHEN ONE PAIR OF ELECTRONS IS SHARED BETWEEN TWO ATOMS

Question 5

WHAT IS A DOUBLE COVALENT BOND

Answer 5

WHEN TWO PAIRS OF ELECTRONS ARE SHARED BETWEEN TWO ATOMS

Question 6

WHAT IS A TRIPLE COVALENT BOND

Answer 6

WHEN THREE PAIRS OF ELECTRONS ARE SHARED BETWEEN TWO ATOMS

Question 7

WHAT ARE THE FOUR MAIN ELEMENTS INVOLVED IN ORGANIC CHEMISTRY

Answer 7

CARBON HYDROGEN OXYGEN NITROGEN

Question 8

WHY IS CARBON UNIQUE

Answer 8

IT CAN FORM MILLIONS OF DIFFERENT STABLE COMPOUNDS

Question 9

ORGANIC CARBON COMPOUNDS ARE USUALLY BONDED TO WHAT

Answer 9

HYDROGEN

Question 10

WHAT DOES ORGANIC CHEMISTRY REFER TO

Answer 10

CARBON BASED COMPOUNDS

Question 11

WHAT CARBON COMPOUNDS ARE CONSIDERED TO BE IN-ORGANIC

Answer 11

CARBON MONOXIDE (CO) AND CARBON DIOXIDE (CO2)

Question 12

WHAT IS AVAGARDROS NUMBER

Answer 12

6.02x10^23

Question 13

WHAT IS FRACTIONAL DISTILLATION

Answer 13

WHEN

Question 14

WHAT IS AN ATOM

Answer 14

THE PARTICLES THAT MAKE UP THE EARTH

Question 15

WHAT IS A NUCLEUS

Answer 15

A TIGHT BUNDLE OF PROTONS AND NEUTRONS

Question 16

WHAT ELEMENTS ARE IN GROUP VIII (18)

Answer 16

GROUP VIII (18)

Question 17

WHAT ELEMENTS ARE IN GROUP I (1)

Answer 17

ALKALI METALS

Question 18

WHAT ELEMENTS ARE IN GROUP VII (17)

Answer 18

HALOGENS

Question 19

WHAT ELEMENTS ARE IN GROUP 3-12

Answer 19

TRANSITION METALS

Question 20

WHAT ELEMENTS ARE IN GROUP II (2)

Answer 20

ALAKALINE EARTHS

Question 21

WHY DO ATOMS FORM BONDS

Answer 21

ATOMS FORM BONDS TO ACHIEVE A STABLE FULL OUTER SHELL (AN OCTET)

Question 22

WHAT BONDING IS FORMED BETWEEN METAL ATOMS

Answer 22

METALLIC BONDING

Question 23

WHAT BONDING IS FOUND BETWEEN OPPOSITELY CHARGED IONS

Answer 23

IONIC BONDIND

Question 24

WHAT IS THE SHARING OF ELECTRONS BETWEEN NON-METAL ATOMS CALLED

Answer 24

COVALENT BONDING

Question 25

WHAT IS COVALENT BONDING

Answer 25

THE SHARING OF ELECTRONS BETWEEN NON-METAL ATOMS

Question 26

WHEN METAL ATOMS BOND..

Answer 26

METAL CATIONS ARE IN A FIXED POSITION (LATTICE)

Question 27

WHAT HAPPENS TO VALENCE ELECTRONS IN METALLIC BONDING

Answer 27

VALENCE ELECTRONS ARE FREE TO MOVE THROUGHOUT THE LATTICE IN A SEA OF DELOCALISED ELECTRONS

Question 28

WHATS THE DIFFERENCE BETWEEN LOCALISED AND DELOCALISED ELECTRONS

Answer 28

LOCALISED ELECTRONS STAY IN A FIXED POSITION | DELOCALISED ELECTRONS MOVE AROUND FREELY

Question 29

PROPERTIS OF METALS

Answer 29

``` MALLEABLE DUCTILE GOOD CONDUCTORS OF ELECTRICITY GOOD THERMAL CONDUCTORS LUSTROUS HIGH MELTING AND BOILING POINTS ```

Question 30

WHAT HAPPENS WHEN ATOMS GAIN OR LOSE ELECTRONS

Answer 30

THEY BECOME ELECTRICALLY CHARGED

Question 31

WHAT HAS TO HAPPEN FOR AN IONIC COMPOUND TO FORM

Answer 31

A POSITIVE METAL IONS (CATION) BONDS WITH A NEGATIVE NON-METAL ION (ANION)

Question 32

SOLUBLE SALTS DISOLVE IN WATER TO FORM ...

Answer 32

AQUEOUS SOLUTIONS

Question 33

WHAT IS A PRECIPITATION REACTION AND WHAT DOES IT FORM

Answer 33

WHEN YOU MIX 2 SOLUBLE SALTS TOGETHER | A PRECIPITATE

Question 34

``` WHAT ARE THE SYMBOLS FOR AQUEOUS LIQUID SOLID GAS ```

Answer 34

(AQ) (L) (S) (G)

Question 35

ANSPAM

Answer 35

ALL NITRATES SODIUM POTASSIUM AMMONIUM IONS ARE ALWAYS SOLUBLE

Question 36

PROPERTIES OF AN IONIC COMPOUND

Answer 36

HIGH SOLUBILITY CONDCUTIVITY HIGH MELTING POINT BRITTLE

Question 37

WHAT MAKES UP A CHEMICAL EQUATION

Answer 37

REACTANTS ----> PRODUCTS

Question 38

WHAT ELEMENTS EXIST AS DIATOMIC MOLECULES

Answer 38

NON-METALS EG H2 O2 N2 F2 Cl2 Br2 I2

Question 39

WHAT TYPE OF COMPOUNDS ARE ALWAYS ELECTRICALLY NEUTRAL

Answer 39

IONIC COMPOUNDS

Question 40

WHAT ARE THE 6 TYPES OF REACTIONS

Answer 40

``` COMBUSTION REACTION PRECIPITATE REACTION COMBINATION REACTION NUEUTRALISATION REACTION (ACID BASE) DECOMPOSOTION REACTION DISPLACEMENT REACTION (DOUBLE) ```

Question 41

WHAT IS A DECOMPOSITION REACTION

Answer 41

WHEN A SINGLE REACTANT BREAKS APART TO FORM SEVERAL PRODUCTS XY --> X + Y

Question 42

WHATS IS A COMBINATION REACTION

Answer 42

WHEN THE REACTANTS COMBINE TO FORM A SINGLE PRODUCT

Question 43

WHAT IS A PRECIPITATION REACTIONS

Answer 43

ALWAYS FORMS A SOLID

Question 44

WHAT CLASSIFIES AS A NEUTRALISATION REACTION

Answer 44

WHEN YOU COMBINE ACID WITH A BASE REACTANT YOU'LL ALWAYS END UP WITH WATER AND SOMETHING ELSE