CBSE - This ppt is made by referring the concepts of Living Science (Ratnasagar) .
For instant Assessment,after every sub -topic Recap slides are added to test students knowledge.
CBSE - This ppt is made by referring the concepts of Living Science (Ratnasagar) .
For instant Assessment,after every sub -topic Recap slides are added to test students knowledge.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
5. • Matter - anything that has mass and take any space
6.
7. • Element issingle matter that cannot be broken
down into simpler matter by chemical methods.
• There are 1
1
6known elements. Of these 92 are found
in the Earth (natural). The other 24 elements have
been made by scientist in laboratories (manmade).
Examples of element:
Fluorine
Aluminium
Gold
silver
Mercury
8. The Symbol of element
• Rules of writing element symbols:
1. If an element issymbolized by one letter, it must be capital
letter, for example oxygen (O), hydrogen (H), carbon (C).
2. If an element issymbolized by more than one letters, the first
letter must be capital letter followed by small letter, for
example zinc (Zn), gold (Au), copper (Cu).
9. Think Time
• What are the chemical symbols of the following
elements?
a) Bromine
b) Silver
c) Uranium
d) Antimony
e) Tungsten
f) Mercury
g) Calcium
h) Natrium
i) Potassium
j) Helium
• What are the names of the elements with the
following chemical symbols?
a) Si
b) P
c) Sn
d) Pb
e) Au
f) Ni
g) Al
h)Mg
i) Zn
f) S
10. Noble gases
lead
mercury
copper
boron
silikon
carbon
chlorine neon
sulphur
.
METAL NON- METAL
METALLOID
⦿Classification of elements as metal and non- metals
are classified as metals and non-metals, depending on how well they conduc
electricity and heat.
– Metals are good conductors and Non-metal very poor electrical
conductors.
– Some elements are classified as Metalloids (or semi-metals).
Metalloids have properties between those of metals and non metals
11. Properties Metals Non-metals
Ability to conduct
heat and electricity
Good conductor Poor conductor
(except carbon)
Densities, melting
and boiling point
Usually solids
(except
mercury), high
densities, high
melting points
and boiling
points
Usually liquid and
gases with low
densities, low
melting points
and boiling points
Appearance Usually hard and
shiny
Usually soft and
dull
Are they
malleable?
(mudah ditempa )
Yes No
13. What are elements made of?
• Atoms
An atom isthe smallest unit of an element, having
properties of that element.
The atoms of one element are different from the
atoms of any other element. For example, all
hydrogen atoms are the same and are different
from atoms of carbon or iron.
• Molecules
Most gaseouselements form molecules comprising
two atoms.
Example:
–Oxygen (O2),
–Hydrogen (H2),
–Nitrogen (N2),
–Chlorine (Cl2)
N N
+
N2 Gases
N N
14. Post test
Answer this question.
• Define an element.
• State the names and symbols of
some common elements.
• Describe ways of classifying the
elements.
www.chem4kids.com
15. • Compound isa substance containing two or more
elements chemically joined together.
• Compound isa single matter that cannot
be broken down by physical separation.
• The compound can only be broken down into its
elements by a chemical reaction.
16. ⦿If elements combine together, they will
completely change.
For example:
◾Water (H2O) is a compound made up of Hydrogen
and Oxygen.
Hydrogen and Oxygen are colourless gases, and
the compound water is colourless liquid
H H O H
H
O
+
17. What are Compound made of?
⦿Molecules is the smallest particle of a compound.
⦿A compound contain only one kind of molecule.
⦿Molecule is a group of two or more atoms
chemically joined together.
18. The chemical formula for water is
This formula tells us that a water molecule
contains 2 hydrogen atoms and 1 oxygen
atom
The chemical formula of a molecule shows the
number and kinds of atoms contained in it.
Symbol of
atom
The amount of
atoms present in
one molecule
19. 1. State the number of atoms and name the
kinds of atoms shown by each formula
a. Alcohol, C2H5OH
b. Refined sugar, C12H22O11
c. Sulphuric acid, H2SO4
d. Sulphur dioxide, SO2
e. Glucose, C2H12O6
f. Urea, CO (NH2)2
20. • In the world, there are many things that’s
not pure substances.
• Mixtures consist of two or more
substances that are not chemically joined
together.
• Mixtures can consist of elements,
compounds
a water is mixture of
compounds including water
and sodium chloride Brass is a mixture of
the elements copper
21. Homogeneous
The prefixes: "hetero"- indicate
difference.
A heterogeneous mixture consists
of visibly different substances or
phases. The three phases or states
of matter are gas, liquid, and solid.
Heterogeneous
The prefixes "homo"- indicate
sameness
A homogeneous mixture has the
same uniform appearance and
composition throughout. Many
homogeneous mixtures are
commonly referred to as
solutions.
In sugar
solution, sugar
is the solute
and water is
the solvent
Editor's Notes
two O atoms bound together, forming a molecule also called oxygen.
