Chemistry th 11 grade The end of second Term

1.

Chemistry
th
11 grade
The end of second Term
Maria Smirnova
[email protected]
Vk.com/masha2101
1

2.

Chemistry
Let’s make chemistry a little bit complicated!
Let’s make chemistry a little bit complicated!

3.

Chemistry
Let’s make chemistry a little bit complicated!

4.

Most know
We should know some special words (terms):
Chemistry – химия
Metals – металлы
Nonmetal - неметаллы
Chemical elements – химические элементы
Chemical reaction – химическая реакция

5.

Today’s Theme is …
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

6.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

7.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

8.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

9.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

10.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of element in English.

11.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

12.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

13.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

14.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

15.

Elements quiz
… chemistry in Englishи and chemical elements in English.
Let’s try to guess what is the name of elements in English.

16.

Reactions
… chemistry in Englishи and chemical elements in English.
But how can I pronounce a chemical reaction?
Na + H2O = NaOH + H2
Sodium plus h two o yields N a O H plus H two

17.

Reactions
… chemistry in Englishи and chemical elements in English.
But how can I pronounce a chemical reaction?
Na + H2O = NaOH + H2
Sodium plus h two o yields N a O H plus H two
Let’s balance this one:
We have one sodium, two hydrogens and one
oxygen in left part.
And still one sodium, one oxygen, but 3
hydrogens.
So, the coefficients are:
2Na + 2H2O = 2NaOH + H2

18.

Problems
Let’s try to solve chemical problem in English.
Problem: Convert 20 grams of H2O to moles.
To get moles of H2O we need…
Task
mh2o = 20 g
-----------------ν-?

19.

Problems
Let’s try to solve chemical problem in English.
Problem: Convert 20 grams of H2O to moles.
Task
mh2o = 20 g
-----------------ν-?
To get moles of H2O we need divide mass (grams)
by molar mass:
Moral mass of water is 18 grams per mole.
ν = mh2o/18 = 20/18 = 10/9 = 1.1 mol

20.

Problems
Let’s try to solve chemical problem in English.
Problem: Convert 20 grams of H2O to moles.
Task
mh2o = 20 g
-----------------ν-?
To get moles of H2O we need divide mass (grams)
by molar mass:
Moral mass of water is 18 grams per mole.
ν = mh2o/18 = 20/18 = 10/9 = 1.1 mol

21.

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