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Natural sciences

The earth and beyond

Properties and uses of materials

Educator section

Memorandum

TYPE OF MATERIAL Metal Ceramic Glass Plastic Fibre
EXAMPLE Iron copper bricks ornaments bottles ashtrays plastic-bowls cotton polyester

(There can be many other examples)

Assignment 10:

4 (Individual)

The newspaper and flour are wet with water. Then they are mixed to make a new material, paper maché. Through this process a new mixture / compound is created.

By mixing certain materials we can create new products.

(There can be many other examples)

Assignment 11:

4 (Individual)

NATURAL MATERIALS SYNTHETIC MATERIALS
cotton, silk, wool linen, etc. polyester, acrylic, viscose, glass fibre

(There can be many other examples)

Leaner section

Content

Activity: to distinguish the most important groups of materials [lo 1.2, lo 1.3, lo 3.2]

  • Materials can be classified in various ways.
  • Let's look at the groups you already know
Type of Material Metal: Ceramics: Glass Plastic: Fibre:
Example ____________ ____________ ____________ ____________ ____________

Mixtures / Compounds

New products are formed when we combine different materials. We can combine water, milk, sugar and coffee powder to make a cup of coffee. We can also combine substances in various ways by mixing them. The appearance and texture of the product usually differs from the original materials. Another example of a mixture is safety glass. A thin plastic layer is sandwiched between two layers of glass.

ASSIGNMENT 10 (INDIVIDUAL)

  • To make something by combining substances (materials).

When we combine newspaper, flour and water we get papier-mâché. Make your own dinosaur in the following way.

Requirements:

Water

Flour

Metal wire

Pair of pliers

Newsprint

Paint and brushes

String

Procedure:

  • Mix one cup of flour with three cups of water.
  • Stir the mixture until it is smooth and creamy.

How to make a wire framework for the dinosaur.

  • Bend the wire into the shape of a dinosaur with the pair of pliers.
  • Fasten the legs and tail to the body with a piece of string.
  • The frame should be able to stand on its own.

Completion:

  • Tear the newsprint into long strips.
  • Soak the strips in the paste.
  • Use the soaked strips to build onto the wire framework.
  • Allow the figure to dry.
  • Complete the dinosaur by painting it.

Conclusion:

In your own words describe the changes that occurred to the newsprint and the flour.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Nowadays most clothes are made from a mixture of materials, for example by combining synthetic and natural fibres.

  • Natural substances: Wool, cotton, silk, etc.

Cotton is light and comfortable, but it creases easily and is difficult to iron.

  • Synthetic substances: are made by humans, for example polyester, acrylic, viscose, glass fibre, etc. One can see these names on the labels of clothes. Have a look at the labels on your clothes.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Natural sciences grade 6. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11079/1.1
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