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Презентация "Нахождение неметаллов в природе", 8 класс
#1 слайд
Where do we find non-
metals?
1 слайд
Where do we find non- metals?
#2 слайд
Answer the questions using the text.
Write down the question and answer:
1.On which two large groups do all the chemical elements
share?
2.What is the position in the PТ of non-metals?
3.How much is the total in the periodic system of chemical
elements - non-metals?
4.What kind of aggregate states are characteristic of non-
metals?
5.What colors are typical for non-metals?
2 слайд
Answer the questions using the text. Write down the question and answer: 1.On which two large groups do all the chemical elements share? 2.What is the position in the PТ of non-metals? 3.How much is the total in the periodic system of chemical elements - non-metals? 4.What kind of aggregate states are characteristic of non- metals? 5.What colors are typical for non-metals?
#3 слайд
The pie chart shows that your body contains 3% of metals.
The rest of you is made up of non- metals. Draw a pie chart
in the notebook.
3 слайд
The pie chart shows that your body contains 3% of metals. The rest of you is made up of non- metals. Draw a pie chart in the notebook.
#4 слайд
Think and answer:
1.What is the percentage
of non-metals in the human
body: 30% or 97% or 27%
or 3%?
2.What is the most
common element in your
body?
3.What percentage of your
body is made of this
element?
4 слайд
Think and answer: 1.What is the percentage of non-metals in the human body: 30% or 97% or 27% or 3%? 2.What is the most common element in your body? 3.What percentage of your body is made of this element?
#5 слайд
Write down:
The most important element in living things is
carbon. All life based on the element carbon.
5 слайд
Write down: The most important element in living things is carbon. All life based on the element carbon.
#6 слайд
Think and answer:
1.What percentage of your body made up of carbon?
В нашем теле восемнадцать процентов углерода - Е ighteen
percent of carbon in our body.
2.How many times more carbon is there in your body than
nitrogen?
Углерода на пятнадцать процентов больше, чем азота в
нашем теле. - Carbon is fifteen percent more than nitrogen in our
body.
6 слайд
Think and answer: 1.What percentage of your body made up of carbon? В нашем теле восемнадцать процентов углерода - Е ighteen percent of carbon in our body. 2.How many times more carbon is there in your body than nitrogen? Углерода на пятнадцать процентов больше, чем азота в нашем теле. - Carbon is fifteen percent more than nitrogen in our body.
#7 слайд
Non-metals in food and drink
Write down the names of
three non-metals that found
both in Coca Cola and in
your body.
Why does it seem strange to
find phosphorus in our
bodies?
7 слайд
Non-metals in food and drink Write down the names of three non-metals that found both in Coca Cola and in your body. Why does it seem strange to find phosphorus in our bodies?
#8 слайд
Non-metals in the air
The air around us made from non-
metals.
What are the two main gases we find
in air? Nitrogen and oxygen are the
two main gases in the air.
What is the percentage of oxygen in
the air? Oxygen in the air is 20
percent.
8 слайд
Non-metals in the air The air around us made from non- metals. What are the two main gases we find in air? Nitrogen and oxygen are the two main gases in the air. What is the percentage of oxygen in the air? Oxygen in the air is 20 percent.
#9 слайд
Now look at the drawings
and translate.
Without oxygen, burning
could not take place.
Without oxygen, we could
not breathe.
9 слайд
Now look at the drawings and translate. Without oxygen, burning could not take place. Without oxygen, we could not breathe.
#10 слайд
Non-metals in the sea
The table shows the four most common elements in sea-
water.
Elements in
sea-water
Approximate
%
oxygen 86
hydrogen 11
chlorine 2
sodium 1
Copy and complete:
The three most common
elements in sea-water are
all ____________
10 слайд
Non-metals in the sea The table shows the four most common elements in sea- water. Elements in sea-water Approximate % oxygen 86 hydrogen 11 chlorine 2 sodium 1 Copy and complete: The three most common elements in sea-water are all ____________
#11 слайд
WHAT YOU NEED TO REMEMBER
Most of the things around us made from ______________
Life based on a non-metal called ___________
We need to breathe a non-metal called ___________
Oxygen also needed for _____________
11 слайд
WHAT YOU NEED TO REMEMBER Most of the things around us made from ______________ Life based on a non-metal called ___________ We need to breathe a non-metal called ___________ Oxygen also needed for _____________
#12 слайд
WHAT YOU NEED TO REMEMBER
Most of the things around us made from non-metals.
Life based on a non-metal called carbon.
We need to breathe a non-metal called oxygen.
Oxygen also needed for burning.
12 слайд
WHAT YOU NEED TO REMEMBER Most of the things around us made from non-metals. Life based on a non-metal called carbon. We need to breathe a non-metal called oxygen. Oxygen also needed for burning.
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