This document discusses how temperature affects density. It explains that as temperature increases, the kinetic energy of particles in a substance increases, causing the particles to move faster and reducing the density. Temperature can cause substances to change phases from solid to liquid to gas, expanding their volume and decreasing density. The document provides examples showing that gases have lower density than liquids or solids because temperature increases their kinetic energy and volume. It concludes that temperature directly impacts a substance's density by changing the energy and movement of its particles.

1. How Temperature Affects Density
Presented By:
Zanwer Akram
SHahang Kamal

2. Introduction
Temperature is the numerical measure of cold
and hot.
It is measured by detecting;
• Heat radiation
• Kinetic energy
• Particle velocity
• The thermometric material’s behavior
Temperature can be calibrated as Celsius , kelvin
and Fahrenheit among other temperature scales.

3. Density
It is Density is volumetric mass density.
It refers to mass per the unit volume of a
substance.
It is achieved by dividing volume by mass.
Density is the physical property of a substance
compares relationship that its mass and
volume have

4. Temperature and Density
Temperature affects density.
This is because increase in temperature
increases the kinetic energy of particles.
Particles make up the substance.
A substance that has more kinetic energy is
warmer.
Its particles that make a substance move
faster they will reduce its density.

5. thus, kinetic energy is affected by
temperature.
This in return affects the density of the
substance.
Increase in temperature makes the air less
dense making it to rise up.
This is called the low pressure system.
When the temperature are reduced , density
of air increased.
This is called high pressure system. Thus ,
temperature affects the density of air as well.

6. effect temperature for density in pure
water

7. effect temperature for density in Other
Pure Liquids

8. Temperature Rates
When temperature are high/low , they cause
change in the phase of a substance.
For instance, substance can change from solid
to liquid and than to gas and vice verse.
This affects the volume and subsequently the
density of the substance.
Increase in temperature causes expansion of
objects making them larger.
Decreased temperatures cause construction
of objects which make them smaller.

9. Calculation
Temperature affects the number of molecules.
It cannot affect the number of neutrons and
protons in an atom.
Density refers to mass of a material per the
unit volume.
As such, gases have lower density when
compared to substances in condensed phase.

10. Thank you for listening
and watching , you
wish you enjoyed the
information

11. Source:
Wikipedia
Slide share
http://butane.chem.uiuc.edu/pshapley/GenC
hem1/L21/2.html
http://www.premiumessays.net/