Module 3

Question 1

Arrhenius definition

Answer 1

A acid that produces H+ ions into solution

Question 2

Define neonates Lowry definition

Answer 2

Transfer of H+ ions into an acid -base reaction.

Question 3

How to find congugate acid or base.

Answer 3

Interpret to have the conjugate acid donate a proton while conjugate base takes a proton . From or to a chemical formula

Question 4

What ways is energy being transferred between systems and surroundings?

Answer 4

Work & heat

Question 5

Define work

Answer 5

Energy used to mass a mass against force

Question 6

Define Heat what’s the symbol?

Answer 6

q
Energy transferred from a hot object to a colder one

Question 7

Can work and heat be measured in joules? No? Yes?

Answer 7

Yes

Question 8

What’s is the first law of thermodynamics

Answer 8

Law of conservation. Energy is conversed.

Question 9

Define internal energy what is the symbol?

Answer 9

E
A system of the sum of all Ek and Ep energies of all its components

Question 10

Define exothermic

Answer 10

Giving off heat , losing energy to its surroundings

Question 11

Define endothermic

Answer 11

Taking in heat , gaining energy from its surroundings

Question 12

What are the three important quantities for thermodynamics

Answer 12

1. Numerical value
2. A unit
3. Assigning endothermic or exothermic perspectives

Question 13

Did you practice enthaply reactions

Answer 13

Blue for yes, purple for no

Question 14

What sign is for exothermic?

Answer 14

• , gives heat

Question 15

What is the sign for endothermic

Answer 15

+ , accept cold

Question 16

What is the sign for heat capacity

Answer 16

CS

Question 17

What is the equation for calorimeter

Answer 17

q=Csm∆T

Question 18

What common phrases for exothermic ?

Answer 18

Emit heat, lose it , hot (-)

Question 19

What common phrases are used for endothermic

Answer 19

Take in heat, gain it (+)

Question 20

Define Internal energy

Answer 20

A sum of both kinetic and potential energy. That are composed within a system

Question 21

Define state function

Answer 21

A quantity that’s like internal energy.
The value depends on the state of the system not how it got there

Question 22

Dignify the sign for the work towards the systems
Work on system =?
Work by system = ?

Answer 22

Work on system = +
Work by system = -

Question 23

Dignify the sign of the system towards the surroundings

Work on surroundings = ?
Work by surroundings = ?

Answer 23

Work on surroundings = -
Work by surroundings = +

Question 24

What is the equation for work :pressure -volume work?

Answer 24

W = -Pext • ∆ V
Pext= atm
∆ V = L

Question 25

Define wavelength

Answer 25

The longer from one hump to the next

Question 26

Define frequency

Answer 26

The amount of humps counted within a time usually in Hz