MISS BEENA CLASS REVISION BASIC

Question 1

EXAMPLES OF POLYATOMIC ELEMENTS

Answer 1

SULFUROUS(S8) AND PHOSPHOROUS(P4)

Question 2

WHAT ARE ELEMENTS?

Answer 2

ATOMS WITH THE SAME ATOMIC NO.(1)
THEY CAN’T BE BROKEN FURTHER.(1)

Question 3

IDEAL GAS EQUATION

Answer 3

PV = nRT
R - 8.31 (J MOL^-1 K^-1)

Question 4

WHAT ARE MOLES?

Answer 4

THE AMOUNT OF SUBSTANCE THAT CONTAINS THE SAME NO. OF PARTICLES AS THE NUMBER OF CARBON ATOMS IN EXACTLY 12g OF THE CARBON-12 ISOTOPE.

Question 5

AVOGADRO CONSTANT

Answer 5

IS THE NUMBER OF ATOMS OF C-12 IN EXACTLY 12g OF CARBON-12.

Question 6

MOLAR MASS

Answer 6

IS THE MASS PER MOLE OF A SUBSTANCE. IT HAS THE SYMBOL M AND THE UNIT gmol^-1

Question 7

EMPIRICAL FORMULA

Answer 7

SHOWS THE SMALLEST WHOLE NO. RATIO OF ATOMS OF EACH ELEMENT IN A COMPOUND.

Question 8

MOLECULAR FORMULA

Answer 8

SHOWS THE ACTUAL NUMBER OF ATOMS OF EACH ELEMENT IN A MOLECULE

Question 9

AVOGADROS LAW

Answer 9

EQUAL VOLUMES OF GASES UNDER THE SAME CONDITIONS OF TEMPERATURE AND PRESSURE, CONTAIN THE SAME NO. OF MOLECULES

Question 10

MOLAR VOLUME

Answer 10

THE VOLUME OCCUPIED BY ONE MOL OF A GAS AT ROOM TEMP AND PRESSURE (RTM)

Question 11

ROOM TEMPERATURE

Answer 11

25 DEGREE CELSIUS AND 298 KELVIN

Question 12

PRESSURE

Answer 12

1ATM —> 101325 KPa