UTT Module 2

Question 1

Define mole

Answer 1

The mole is the unit for amount substance

Question 2

1 mole of particles is equivalent to

Answer 2

6.023 x 10 to the 23 particles

Question 3

What is Avogrado’s number

Answer 3

6.023 x 10 to the 23

Question 4

1 mole equivalent in carbon

Answer 4

1 mole is 12g of Carbon

Question 5

Avogadro’s law states that

Answer 5

“equal volumes of all gases, at the same temperature and pressure, have the same number of molecules.

Question 6

Define Molar mass

Answer 6

The mass of 1 mole of atoms of an element

Question 7

Unit of molar mass

Answer 7

g/mol

Question 8

Define molar volume

Answer 8

the volume occupied by one mole of gas

Question 9

One mole of gas at STP

Answer 9

22.414 L

Question 10

One mole of gas at RTP

Answer 10

24 L

Question 11

What does RTP stand for

Answer 11

Room Temperature and Pressure

Question 12

What does STP

Answer 12

Standard Temperature and Pressure

Question 13

atom to mole

Answer 13

divide by avogrado number

Question 14

mole to atom

Answer 14

multiply by avogrado number

Question 15

Evolution reaction definition and eg

Answer 15

reaction that occurs in liquid and forms a gas eg antacids

Question 16

Combustion reaction definition and eg

Answer 16

reaction with O2 emits heat d forming one or more Oxygen
containing compounds eg automobile fluids

Question 17

Precipitation Reaction definition and eg

Answer 17

reactions that form solid substances in water eg laundry detergent

Question 18

Neutralization reaction and definitions

Answer 18

Reactions that form a salt and water from an acid and a base eg NaOH and HCl

Question 19

What are the 5 types of chemical reactions
ie SDSDC

Answer 19

Synthesis-get together
Decomposition-break up
Single replacement- cheater
Double replacement Swap
Combustion reacts with O2

Question 20

5 Evidence of Chemical Reaction

Answer 20

color change
formation of solid
formation of gas
formation of light
emission/absorption of heat