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Natural sciences

Matter, measuring and reaction

Educator section

Memorandum

Assignment 1:

1. Matter is the building material that everything is made of

2. Natural: steel; diamonds; copper; granite; cotton; iron

Synthetic: plastic; glass; soap; nylon; rubber

Definitions: Atom: the smallest particle all matter is made of

Element: Element: a material that consists of just one type of atom

Molecule: a group of atoms that form a unit that displays the characteristics of the material

Compound: a material that consists of two or more atoms that can be broken up into other materials

Leaner section

Content

Chemistry is a subdivision of the Natural Sciences learning area. It is the science that deals with the composition and characteristics of substances (matter). All of us make use of Chemistry every day, because simple things like making a cup of coffee or making popcorn involves chemistry.

Activity: to describe the terms matter, atoms, molecules, elements and compounds [lo 2.2]

1. What is matter?

Matter is the scientific term for the building materials used in the composition of all things. All objects on earth are made of matter - the book you are reading, the table on which you work and the air you inhale. But it is not non-living or inanimate things only that are made of matter. All living things, like plants or animals, are also made of matter.

Assignment 1:

1. Write your own explanation of what matter is:

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______________________________________________________________

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_____________________________________________________________________

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2. Although many non-living substances occur naturally , they have to be purified or processed before they can be used. Iron, which has to be separated from iron ore, is an example of this, as is oil, which has to be refined to be made useable. Other substances are made by combining and treating different raw materials, e.g. cotton, wood and wool. Materials obtained in this way are referred to as synthetic materials .

Classify the following materials as natural or synthetic. Circle the natural substances and underline the synthetic substances.

steel; plastic; glass; diamonds;
copper; soap; granite; nylon;
rubber; gold; oxygen; iron;
salt; vinegar; leather; coffee

Atoms, molecules, elements and compounds

All matter in the world consists of very small particles. These particles are known as atoms ; they are the smallest particles from which matter is made and can only be observed with the help of a microscope. A number of atoms are combined to form a molecule, just like bricks that are arranged together to form a wall.

An element is a substance that consists of one kind of atom only. This means that an element cannot be divided to obtain something else. A c ompound is a substance that consists of two or more kinds of atoms and it can be divided to provide other substances. Some of these substances could be elements. Water is the most common compound that we know. It consists of the elements hydrogen and oxygen.

The difference between elements and compounds can also be represented as the difference between a loaf of bread and its ingredients. The “elements” are the ingredients of the bread, namely water, yeast, sugar, flour, salt and butter. The “compound” is the loaf that is baked when these ingredients have been mixed together.

Explain the following terms in your own words:

Atoms: ______________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Element: _____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Molecule: ____________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Compound: __________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.2: We know this when the learner categorises information.

Questions & Answers

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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
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