Intro to
This presentation is the property of its rightful owner.
Sponsored Links
1 / 23

Intro to chemistry PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

Intro to chemistry. Therm. o. A. _______________ is the study of ______ changes that occur during chemical reactions and changes in state. Thermochemistry. energy. Intro to chemistry. Therm. o.

Download Presentation

Intro to chemistry

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Intro to chemistry

Intro to chemistry

Therm

o

A. _______________ is the study of ______ changes that occur during chemical reactions and changes in state.

Thermochemistry

energy


Intro to chemistry

Intro to chemistry

Therm

o

1. Every substance has a certain amount of ______ inside it. The energy stored in the chemical _____ of a substance is called __________ _______ _____.

energy

bonds

chemical

potential

energy


Intro to chemistry

Intro to chemistry

Therm

o

2. The law of __________ of _____ states that in any chemical or physical process, _____ is neither created nor destroyed.

conservation

energy

energy


Intro to chemistry

Intro to chemistry

Therm

o

B. A major goal of thermochemistry is to examine the flow of ____ energy between a system and its surroundings.

heat


Intro to chemistry

Intro to chemistry

Therm

o

1. ____, represented by ___, is energy that transfers from one object to another because of a __________ difference between the objects.

Q = mCΔT

Heat

Q

temperature


Intro to chemistry

Intro to chemistry

Therm

o

a. Heat flows from a ______ object to a _____ object.

warmer

cooler


Intro to chemistry

Intro to chemistry

Therm

o

b. If two objects remain in contact, heat will flow from the ______ object to the _____ object until the temperature of both is the ____.

warmer

cooler

same


Intro to chemistry

Intro to chemistry

Therm

o

2. Heat is _______ from the surroundings in an __________ process.

absorbed

endothermic


Intro to chemistry

Intro to chemistry

Therm

o

3. Heat is _______ into the surroundings in an _________ process.

released

exothermic


Intro to chemistry

Intro to chemistry

Therm

o


Intro to chemistry

Intro to chemistry

Therm

o


Intro to chemistry

Intro to chemistry

Therm

o

4. Heat flow is measured in two common units, the ______ and the ____.

calorie

Joule


Intro to chemistry

Intro to chemistry

Therm

o

a. A _____, _, is defined as the quantity of heat needed to raise the temperature of ___ of pure water ___.

calorie

c

1g

1°C


Intro to chemistry

Intro to chemistry

Therm

o

b. The ____, _, is the quantity of heat that raises the temperature of __ of water _______.

Joule

J

1g

0.2930°C


Intro to chemistry

Intro to chemistry

Therm

o

C. The amount of heat needed to increase the temperature of an object exactly 1°C is the ____ ______ of that object.

heat

capacity


Intro to chemistry

Intro to chemistry

Therm

o

1. The ____ ______ depends on both its ____ and its _______ composition.

heat

capacity

mass

chemical


Intro to chemistry

Intro to chemistry

Therm

o

2. The specific heat capacity, or simply ______ ____, C, of a substance is the amount of heat it takes to raise the temperature of 1g of the substance 1°C.

specific

heat


Intro to chemistry

Intro to chemistry

Therm

o

C = Q= heat (J or cal)

m x ΔT mass(g) x change in temp. °C


  • Login