CHEMISTRY: The Periodic table

• Complete the text. Use: boiled / body/ alchemist / German / gold /colour / burned / phosphorous

Hennig Brand was a 1-German 2-Alchemist who lived in the 1600 (16 Hundreds). In the 17 Century alchemists wanted to extract 3-Gold from the human -4-Body He was sure urine had gold because of its 5-Colour He 6-Boiled his own urine and finally 7-Burned the resulting paste at a high temperature. Smoke appeared and this paste burned violently . Brand had isolated 8-Phosphorous from his urine. This was the first element that was isolated.

• Answer

1. Which were the elements in the “Greek Periodic Table”?
2. Why was Antoine Lavoisier important character for Chemistry?
3. How do we know him now?

• Complete these ideas with verbs in the Passive Voice. You may need present or past tenses. Explain why.

e.g. All elements were created in the Big Bang. (create)

1. Elements WERE FORMED and RELEASED into space by exploding stars. (form/release)
2. These elements WERE STUDIED by scientists during history. (study)
3. The list of elements CAN FIND in the Periodic Table. (find)
4. Elements like gold, silver and copper WERE DISCOVERED by ancient cultures. (discover)
5. These elements WERE USED for jewelry and tools. (use)
6. Gold, silver and copper CAN BE FOUND easily. (can/find)

• Are these sentences TRUE or FALSE?

1. For Lavoisier an element cannot be separated by chemical means/methods. F
2. He made a short list of 2 or 3 elements. F
3. He divided elements into gases or metals. T
4. He created a complete periodic table. F

• Complete the table with the scientists’ names. Put them in chronological order (according to the video. Copy the correct sentences.

Scientist’s name		His contribution to science.
Wolfgang Döbereiner: B-H Dmitri Mendeleev: D-F Hennig Brand: A Antoine Lavoisier: C-E John Dalton: G	a-	isolated the first element.
	b-	combined elements to see how they reacted to one another.
	c-	finally organized the set of elements in the periodic table.
	d-	organized elements according to their atomic weight.
	e-	defined what an element was.
	f-	predicted elements that had not been discovered yet.
	g-	weighed elements.
	h-	discovered shared properties and reactions.

• Make a list of the elements that appear on the video. Include at least 6 elements

	ELEMENT		time
e.g.	Gold	Au	1:36
1-	Silver	Ag	1:41
2-	Copper	Cu	1:42
3-	Phosphorous	P	2:19
4-	Sodium	Na	3:29
5-	Lithium	Li	3:29
6-	Potassium	Ku	3:29

Copy these sentences in your BLOG and say if they are TRUE or FALSE.

1.Chemistry is the science that deals with materials in laboratories. T
2.There is only one type of chemistry. F
3.Organic chemistry looks at which chemicals are in things.  F
4.Organic chemistry looks at things that have carbon in them. T
5.Polymer chemistry is a small area of chemistry. T

Re-read the text and CREATE FOUR false sentences

1. The basic unit of an element is called an electron 
2. A salt is also made when a base react 

3. Chromates can´t cause cancer.

4.  Acids release OH⁻  ions  when in water, and bases release H⁺ ions when in water. 

Homework 30/06 - Lucas Molina

The basic unit of an element is called an atom.
Acids release H+ ions
An atom is the smallest building block that you can cut an element into without the element breaking down

when we broke an atom its produce a chain reaction.
when i mix a base whith acid its produce a salt + H2O
when its mixes POTASSIUM whith H2O produce a explotation 

The Group KÉMYZTRÍ

We are a group of students, integrated for Manu Vargas, Juanjo Góngora, Agus Fernández, Gonzaa Angerami and Lucas Molina ;) .

Gonzalo Angerami - Biography

My name is Gonzalo Angerami and i live in the Longchamps, Buenos Aires. My life is Amazing because every day i drive my lamborghini Diablo to go school,
After of the school i follow driving to the club where I do extreme sports on my bike with a wheel or handlebars without seat

Gonzalo Angerami - Part of Mole

Moles can be used to see how many molecules are in chemical compounds, too. Copper(II) chloride is an example. CuCl₂is its chemical formula. There is one copper atom (63.55) and two chlorine atoms (35.45 · 2 = 70.90). Add all the molar masses of the elements together to get the molar mass of the chemical compound (63.55 + 70.90 = 134.45). That means in 134.45 grams of copper(II) chloride, there is one mole of copper(II) chloride molecules. This concept is used to calculate how much chemicals are needed in a chemical reaction if no reactants (chemicals that are reacted) should be left. If too much reactant is used, there will be some reactants left in the chemical reaction.

Audio:


Audio and voice recording >>

Agustina Fernandez - Biography

Hello, my name is Agustina Cecilia Fernandez i am 16 years old and my birthday is 14th of febrero in 2000. I like a Handball because is my passion and my favourite club is The best of in the World is "Club Atletico Boca Juniors"